diff --git a/src/model/boat.rs b/src/model/boat.rs
index 19e2b89..585ceef 100644
--- a/src/model/boat.rs
+++ b/src/model/boat.rs
@@ -1,3 +1,4 @@
+use rocket::FromForm;
 use serde::{Deserialize, Serialize};
 use sqlx::{FromRow, SqlitePool};
 
@@ -18,36 +19,46 @@ pub struct Boat {
     external: bool,
 }
 
+#[derive(FromForm)]
+pub struct BoatToAdd<'r> {
+    pub name: &'r str,
+    pub amount_seats: i64,
+    pub year_built: Option<i64>,
+    pub boatbuilder: Option<&'r str>,
+    pub default_shipmaster_only_steering: bool,
+    pub skull: bool,
+    pub external: bool,
+    pub location_id: Option<i64>,
+    pub owner: Option<i64>,
+}
+
+#[derive(FromForm)]
+pub struct BoatToUpdate<'r> {
+    pub id: i32,
+    pub name: &'r str,
+    pub amount_seats: i64,
+    pub year_built: Option<i64>,
+    pub boatbuilder: Option<&'r str>,
+    pub default_shipmaster_only_steering: bool,
+    pub skull: bool,
+    pub external: bool,
+    pub location_id: Option<i64>,
+    pub owner: Option<i64>,
+}
+
 impl Boat {
     pub async fn find_by_id(db: &SqlitePool, id: i32) -> Option<Self> {
         sqlx::query_as!(
             Self,
-            "
-    SELECT id, name, amount_seats, location_id, owner, year_built, boatbuilder, default_shipmaster_only_steering, skull, external 
-    FROM boat 
-    WHERE id like ?
-            ",
+            "SELECT id, name, amount_seats, location_id, owner, year_built, boatbuilder, default_shipmaster_only_steering, skull, external 
+             FROM boat 
+             WHERE id like ?",
             id
         )
         .fetch_one(db)
         .await
         .ok()
     }
-    //
-    //    pub async fn find_by_name(db: &SqlitePool, name: &str) -> Option<Self> {
-    //        sqlx::query_as!(
-    //            User,
-    //            "
-    //SELECT id, name, pw, is_cox, is_admin, is_guest, deleted, last_access
-    //FROM user
-    //WHERE name like ?
-    //        ",
-    //            name
-    //        )
-    //        .fetch_one(db)
-    //        .await
-    //        .ok()
-    //    }
 
     pub async fn is_locked(&self, db: &SqlitePool) -> bool {
         sqlx::query!("SELECT * FROM boat_damage WHERE boat_id=? AND lock_boat=true AND user_id_verified is null", self.id).fetch_optional(db).await.unwrap().is_some()
@@ -78,58 +89,35 @@ ORDER BY amount_seats DESC
         .unwrap() //TODO: fixme
     }
 
-    pub async fn create(
-        db: &SqlitePool,
-        name: &str,
-        amount_seats: i64,
-        year_built: Option<i64>,
-        boatbuilder: Option<&str>,
-        default_shipmaster_only_steering: bool,
-        skull: bool,
-        external: bool,
-        location_id: Option<i64>,
-        owner: Option<i64>,
-    ) -> bool {
+    pub async fn create(db: &SqlitePool, boat: BoatToAdd<'_>) -> bool {
         sqlx::query!(
             "INSERT INTO boat(name, amount_seats, year_built, boatbuilder, default_shipmaster_only_steering, skull, external, location_id, owner) VALUES (?,?,?,?,?,?,?,?,?)",
-            name,
-            amount_seats,
-            year_built,
-            boatbuilder,
-            default_shipmaster_only_steering,
-            skull,
-            external,
-            location_id,
-            owner
+            boat.name,
+            boat.amount_seats,
+            boat.year_built,
+            boat.boatbuilder,
+            boat.default_shipmaster_only_steering,
+            boat.skull,
+            boat.external,
+            boat.location_id,
+            boat.owner
         )
         .execute(db)
         .await.is_ok()
     }
 
-    pub async fn update(
-        &self,
-        db: &SqlitePool,
-        name: &str,
-        amount_seats: i64,
-        year_built: Option<i64>,
-        boatbuilder: Option<&str>,
-        default_shipmaster_only_steering: bool,
-        skull: bool,
-        external: bool,
-        location_id: Option<i64>,
-        owner: Option<i64>,
-    ) -> bool {
+    pub async fn update(&self, db: &SqlitePool, boat: BoatToUpdate<'_>) -> bool {
         sqlx::query!(
             "UPDATE boat SET name=?, amount_seats=?, year_built=?, boatbuilder=?, default_shipmaster_only_steering=?, skull=?, external=?, location_id=?, owner=? WHERE id=?",
-        name,
-        amount_seats,
-        year_built,
-        boatbuilder,
-        default_shipmaster_only_steering,
-        skull,
-        external,
-        location_id,
-        owner,
+        boat.name,
+        boat.amount_seats,
+        boat.year_built,
+        boat.boatbuilder,
+        boat.default_shipmaster_only_steering,
+        boat.skull,
+        boat.external,
+        boat.location_id,
+        boat.owner,
             self.id
         )
         .execute(db)
@@ -141,13 +129,16 @@ ORDER BY amount_seats DESC
         sqlx::query!("DELETE FROM boat WHERE id=?", self.id)
             .execute(db)
             .await
-            .unwrap(); //Okay, because we can only create a User of a valid id
+            .unwrap(); //Okay, because we can only create a Boat of a valid id
     }
 }
 
 #[cfg(test)]
 mod test {
-    use crate::{model::boat::Boat, testdb};
+    use crate::{
+        model::boat::{Boat, BoatToAdd},
+        testdb,
+    };
 
     use sqlx::SqlitePool;
 
@@ -179,15 +170,17 @@ mod test {
         assert_eq!(
             Boat::create(
                 &pool,
-                "new-boat-name".into(),
-                42,
-                None,
-                "Best Boatbuilder".into(),
-                true,
-                true,
-                false,
-                Some(1),
-                None
+                BoatToAdd {
+                    name: "new-boat-name".into(),
+                    amount_seats: 42,
+                    year_built: None,
+                    boatbuilder: "Best Boatbuilder".into(),
+                    default_shipmaster_only_steering: true,
+                    skull: true,
+                    external: false,
+                    location_id: Some(1),
+                    owner: None
+                }
             )
             .await,
             true
@@ -201,15 +194,17 @@ mod test {
         assert_eq!(
             Boat::create(
                 &pool,
-                "Haichenbach".into(),
-                42,
-                None,
-                "Best Boatbuilder".into(),
-                true,
-                true,
-                false,
-                Some(1),
-                None
+                BoatToAdd {
+                    name: "Haichenbach".into(),
+                    amount_seats: 42,
+                    year_built: None,
+                    boatbuilder: "Best Boatbuilder".into(),
+                    default_shipmaster_only_steering: true,
+                    skull: true,
+                    external: false,
+                    location_id: Some(1),
+                    owner: None
+                }
             )
             .await,
             false
diff --git a/src/model/location.rs b/src/model/location.rs
index b0e69c3..a66d810 100644
--- a/src/model/location.rs
+++ b/src/model/location.rs
@@ -24,20 +24,14 @@ impl Location {
     }
 
     pub async fn all(db: &SqlitePool) -> Vec<Self> {
-        sqlx::query_as!(
-            Self,
-            "
-SELECT id, name
-FROM location 
-        "
-        )
-        .fetch_all(db)
-        .await
-        .unwrap() //TODO: fixme
+        sqlx::query_as!(Self, "SELECT id, name FROM location")
+            .fetch_all(db)
+            .await
+            .unwrap() //TODO: fixme
     }
 
     pub async fn create(db: &SqlitePool, name: &str) -> bool {
-        sqlx::query!("INSERT INTO location(name) VALUES (?)", name,)
+        sqlx::query!("INSERT INTO location(name) VALUES (?)", name)
             .execute(db)
             .await
             .is_ok()
diff --git a/src/model/logbook.rs b/src/model/logbook.rs
index 1aa60ef..9406ae0 100644
--- a/src/model/logbook.rs
+++ b/src/model/logbook.rs
@@ -1,6 +1,7 @@
 use chrono::NaiveDateTime;
+use rocket::FromForm;
 use serde::Serialize;
-use sqlx::{FromRow, SqlitePool};
+use sqlx::{FromRow, Sqlite, SqlitePool, Transaction};
 
 use super::{boat::Boat, rower::Rower, user::User};
 
@@ -19,6 +20,29 @@ pub struct Logbook {
     pub logtype: Option<i64>,
 }
 
+#[derive(FromForm)]
+pub struct LogToAdd {
+    pub boat_id: i32,
+    pub shipmaster: i64,
+    pub shipmaster_only_steering: bool,
+    pub departure: String,
+    pub arrival: Option<String>,
+    pub destination: Option<String>,
+    pub distance_in_km: Option<i64>,
+    pub comments: Option<String>,
+    pub logtype: Option<i64>,
+    pub rower: Vec<i64>,
+}
+
+#[derive(FromForm)]
+pub struct LogToFinalize {
+    pub destination: String,
+    pub distance_in_km: i64,
+    pub comments: Option<String>,
+    pub logtype: Option<i64>,
+    pub rower: Vec<i64>,
+}
+
 #[derive(Serialize)]
 pub struct LogbookWithBoatAndRowers {
     #[serde(flatten)]
@@ -56,21 +80,6 @@ impl Logbook {
         .ok()
     }
 
-    //    pub async fn find_by_name(db: &SqlitePool, name: &str) -> Option<Self> {
-    //        sqlx::query_as!(
-    //            User,
-    //            "
-    //SELECT id, name, pw, is_cox, is_admin, is_guest, deleted, last_access
-    //FROM user
-    //WHERE name like ?
-    //        ",
-    //            name
-    //        )
-    //        .fetch_one(db)
-    //        .await
-    //        .ok()
-    //    }
-    //
     pub async fn on_water(db: &SqlitePool) -> Vec<LogbookWithBoatAndRowers> {
         let logs = sqlx::query_as!(
                 Logbook,
@@ -123,20 +132,8 @@ impl Logbook {
         ret
     }
 
-    pub async fn create(
-        db: &SqlitePool,
-        boat_id: i32,
-        shipmaster: i64,
-        shipmaster_only_steering: bool,
-        departure: NaiveDateTime,
-        arrival: Option<NaiveDateTime>,
-        destination: Option<String>,
-        distance_in_km: Option<i64>,
-        comments: Option<String>,
-        logtype: Option<i64>,
-        rower: Vec<i64>,
-    ) -> Result<(), LogbookCreateError> {
-        let boat = match Boat::find_by_id(db, boat_id).await {
+    pub async fn create(db: &SqlitePool, log: LogToAdd) -> Result<(), LogbookCreateError> {
+        let boat = match Boat::find_by_id(db, log.boat_id).await {
             Some(b) => b,
             None => {
                 return Err(LogbookCreateError::BoatNotFound);
@@ -151,27 +148,44 @@ impl Logbook {
             return Err(LogbookCreateError::BoatAlreadyOnWater);
         }
 
-        if rower.len() > boat.amount_seats as usize - 1 {
+        if log.rower.len() > boat.amount_seats as usize - 1 {
             return Err(LogbookCreateError::TooManyRowers(
                 boat.amount_seats as usize,
-                rower.len() + 1,
+                log.rower.len() + 1,
             ));
         }
 
+        let mut tx = db.begin().await.unwrap();
+
+        let departure = NaiveDateTime::parse_from_str(&log.departure, "%Y-%m-%dT%H:%M").unwrap();
+        let arrival = log
+            .arrival
+            .map(|a| NaiveDateTime::parse_from_str(&a, "%Y-%m-%dT%H:%M").unwrap());
         let inserted_row = sqlx::query!(
                 "INSERT INTO logbook(boat_id, shipmaster, shipmaster_only_steering, departure, arrival, destination, distance_in_km, comments, logtype) VALUES (?,?,?,?,?,?,?,?,?) RETURNING id",
-                boat_id, shipmaster, shipmaster_only_steering, departure, arrival, destination, distance_in_km, comments, logtype
+                log.boat_id,
+                log.shipmaster,
+                log.shipmaster_only_steering,
+                departure,
+                arrival,
+                log.destination,
+                log.distance_in_km,
+                log.comments,
+                log.logtype
             )
-            .fetch_one(db)
+            .fetch_one(&mut tx)
             .await.unwrap();
 
-        for rower in &rower {
-            Rower::create(db, inserted_row.id, *rower).await;
+        for rower in &log.rower {
+            Rower::create(&mut tx, inserted_row.id, *rower).await;
         }
+
+        tx.commit().await.unwrap();
+
         Ok(())
     }
 
-    async fn remove_rowers(&self, db: &SqlitePool) {
+    async fn remove_rowers(&self, db: &mut Transaction<'_, Sqlite>) {
         sqlx::query!("DELETE FROM rower WHERE logbook_id=?", self.id)
             .execute(db)
             .await
@@ -182,11 +196,7 @@ impl Logbook {
         &self,
         db: &SqlitePool,
         user: &User,
-        destination: String,
-        distance_in_km: i64,
-        comments: Option<String>,
-        logtype: Option<i64>,
-        rower: Vec<i64>,
+        log: LogToFinalize,
     ) -> Result<(), LogbookUpdateError> {
         if user.id != self.shipmaster {
             return Err(LogbookUpdateError::NotYourEntry);
@@ -194,35 +204,37 @@ impl Logbook {
 
         let boat = Boat::find_by_id(db, self.boat_id as i32).await.unwrap(); //ok
 
-        if rower.len() > boat.amount_seats as usize - 1 {
+        if log.rower.len() > boat.amount_seats as usize - 1 {
             return Err(LogbookUpdateError::TooManyRowers(
                 boat.amount_seats as usize,
-                rower.len() + 1,
+                log.rower.len() + 1,
             ));
         }
 
-        //TODO: check current date
-
         let arrival = format!("{}", chrono::offset::Local::now().format("%Y-%m-%d %H:%M"));
 
+        let mut tx = db.begin().await.unwrap();
+
         sqlx::query!(
             "UPDATE logbook SET destination=?, distance_in_km=?, comments=?, logtype=?, arrival=? WHERE id=?",
-            destination,
-            distance_in_km,
-            comments,
-            logtype,
+            log.destination,
+            log.distance_in_km,
+            log.comments,
+            log.logtype,
             arrival,
             self.id
         )
-        .execute(db)
+        .execute(&mut tx)
         .await.unwrap(); //TODO: fixme
 
-        self.remove_rowers(db).await;
+        self.remove_rowers(&mut tx).await;
 
-        for rower in &rower {
-            Rower::create(db, self.id, *rower).await;
+        for rower in &log.rower {
+            Rower::create(&mut tx, self.id, *rower).await;
         }
 
+        tx.commit().await.unwrap();
+
         Ok(())
     }
 
diff --git a/src/model/rower.rs b/src/model/rower.rs
index 4bcdc69..f2b4f78 100644
--- a/src/model/rower.rs
+++ b/src/model/rower.rs
@@ -1,5 +1,5 @@
 use serde::{Deserialize, Serialize};
-use sqlx::{FromRow, SqlitePool};
+use sqlx::{FromRow, Sqlite, SqlitePool, Transaction};
 
 use super::{logbook::Logbook, user::User};
 
@@ -10,21 +10,6 @@ pub struct Rower {
 }
 
 impl Rower {
-    //pub async fn find_by_id(db: &SqlitePool, id: i32) -> Option<Self> {
-    //    sqlx::query_as!(
-    //        Self,
-    //        "
-    //SELECT id,boat_id,shipmaster,shipmaster_only_steering,departure,arrival,destination,distance_in_km,comments,logtype
-    //FROM logbook
-    //WHERE id like ?
-    //        ",
-    //        id
-    //    )
-    //    .fetch_one(db)
-    //    .await
-    //    .ok()
-    //}
-
     pub async fn for_log(db: &SqlitePool, log: &Logbook) -> Vec<User> {
         sqlx::query_as!(
             User,
@@ -40,9 +25,7 @@ impl Rower {
         .unwrap()
     }
 
-    pub async fn create(db: &SqlitePool, logbook_id: i64, rower_id: i64) {
-        //Check if boat is not locked
-        //Check if boat is already on water
+    pub async fn create(db: &mut Transaction<'_, Sqlite>, logbook_id: i64, rower_id: i64) {
         let _ = sqlx::query!(
             "INSERT INTO rower(logbook_id, rower_id) VALUES (?,?)",
             logbook_id,
@@ -52,83 +35,4 @@ impl Rower {
         .await
         .unwrap();
     }
-
-    //    pub async fn delete(&self, db: &SqlitePool) {
-    //        sqlx::query!("DELETE FROM boat WHERE id=?", self.id)
-    //            .execute(db)
-    //            .await
-    //            .unwrap(); //Okay, because we can only create a User of a valid id
-    //    }
 }
-//
-//#[cfg(test)]
-//mod test {
-//    use crate::{model::boat::Boat, testdb};
-//
-//    use sqlx::SqlitePool;
-//
-//    #[sqlx::test]
-//    fn test_find_correct_id() {
-//        let pool = testdb!();
-//        let boat = Boat::find_by_id(&pool, 1).await.unwrap();
-//        assert_eq!(boat.id, 1);
-//    }
-//
-//    #[sqlx::test]
-//    fn test_find_wrong_id() {
-//        let pool = testdb!();
-//        let boat = Boat::find_by_id(&pool, 1337).await;
-//        assert!(boat.is_none());
-//    }
-//
-//    #[sqlx::test]
-//    fn test_all() {
-//        let pool = testdb!();
-//        let res = Boat::all(&pool).await;
-//        assert!(res.len() > 3);
-//    }
-//
-//    #[sqlx::test]
-//    fn test_succ_create() {
-//        let pool = testdb!();
-//
-//        assert_eq!(
-//            Boat::create(
-//                &pool,
-//                "new-boat-name".into(),
-//                42,
-//                None,
-//                "Best Boatbuilder".into(),
-//                true,
-//                true,
-//                false,
-//                Some(1),
-//                None
-//            )
-//            .await,
-//            true
-//        );
-//    }
-//
-//    #[sqlx::test]
-//    fn test_duplicate_name_create() {
-//        let pool = testdb!();
-//
-//        assert_eq!(
-//            Boat::create(
-//                &pool,
-//                "Haichenbach".into(),
-//                42,
-//                None,
-//                "Best Boatbuilder".into(),
-//                true,
-//                true,
-//                false,
-//                Some(1),
-//                None
-//            )
-//            .await,
-//            false
-//        );
-//    }
-//}
diff --git a/src/model/tripdetails.rs b/src/model/tripdetails.rs
index 986b80a..c4f2fff 100644
--- a/src/model/tripdetails.rs
+++ b/src/model/tripdetails.rs
@@ -1,17 +1,31 @@
 use chrono::NaiveDate;
+use rocket::FromForm;
 use serde::{Deserialize, Serialize};
 use sqlx::{FromRow, SqlitePool};
 
 #[derive(FromRow, Debug, Serialize, Deserialize)]
 pub struct TripDetails {
     pub id: i64,
-    planned_starting_time: String,
-    max_people: i64,
-    day: String,
-    notes: Option<String>,
+    pub planned_starting_time: String,
+    pub max_people: i64,
+    pub day: String,
+    pub notes: Option<String>,
     pub allow_guests: bool,
-    trip_type_id: Option<i64>,
-    always_show: bool,
+    pub trip_type_id: Option<i64>,
+    pub always_show: bool,
+}
+
+#[derive(FromForm, Serialize)]
+pub struct TripDetailsToAdd<'r> {
+    //TODO: properly parse `planned_starting_time`
+    pub planned_starting_time: &'r str,
+    pub max_people: i32,
+    pub day: String,
+    //#[field(validate = range(1..))] TODO: fixme
+    pub notes: Option<&'r str>,
+    pub trip_type: Option<i64>,
+    pub allow_guests: bool,
+    pub always_show: bool,
 }
 
 impl TripDetails {
@@ -31,25 +45,16 @@ WHERE id like ?
     }
 
     /// Creates a new entry in `trip_details` and returns its id.
-    pub async fn create(
-        db: &SqlitePool,
-        planned_starting_time: &str,
-        max_people: i32,
-        day: &str,
-        notes: Option<&str>,
-        allow_guests: bool,
-        trip_type_id: Option<i64>,
-        always_show: bool,
-    ) -> i64 {
+    pub async fn create(db: &SqlitePool, tripdetails: TripDetailsToAdd<'_>) -> i64 {
         let query = sqlx::query!(
             "INSERT INTO trip_details(planned_starting_time, max_people, day, notes, allow_guests, trip_type_id, always_show) VALUES(?, ?, ?, ?, ?, ?, ?)" ,
-            planned_starting_time,
-            max_people,
-            day,
-            notes,
-            allow_guests,
-            trip_type_id,
-            always_show
+            tripdetails.planned_starting_time,
+            tripdetails.max_people,
+            tripdetails.day,
+            tripdetails.notes,
+            tripdetails.allow_guests,
+            tripdetails.trip_type,
+            tripdetails.always_show
         )
         .execute(db)
         .await
@@ -87,7 +92,7 @@ ORDER BY day;",
 
 #[cfg(test)]
 mod test {
-    use crate::testdb;
+    use crate::{model::tripdetails::TripDetailsToAdd, testdb};
 
     use super::TripDetails;
     use sqlx::SqlitePool;
@@ -113,13 +118,15 @@ mod test {
         assert_eq!(
             TripDetails::create(
                 &pool,
-                "10:00".into(),
-                2,
-                "1970-01-01".into(),
-                None,
-                false,
-                None,
-                false
+                TripDetailsToAdd {
+                    planned_starting_time: "10:00".into(),
+                    max_people: 2,
+                    day: "1970-01-01".into(),
+                    notes: None,
+                    allow_guests: false,
+                    trip_type: None,
+                    always_show: false
+                }
             )
             .await,
             3,
@@ -127,13 +134,15 @@ mod test {
         assert_eq!(
             TripDetails::create(
                 &pool,
-                "10:00".into(),
-                2,
-                "1970-01-01".into(),
-                None,
-                false,
-                None,
-                false
+                TripDetailsToAdd {
+                    planned_starting_time: "10:00".into(),
+                    max_people: 2,
+                    day: "1970-01-01".into(),
+                    notes: None,
+                    allow_guests: false,
+                    trip_type: None,
+                    always_show: false
+                }
             )
             .await,
             4,
diff --git a/src/model/user.rs b/src/model/user.rs
index ddd6208..b045871 100644
--- a/src/model/user.rs
+++ b/src/model/user.rs
@@ -148,15 +148,15 @@ ORDER BY last_access DESC
     }
 
     pub async fn login(db: &SqlitePool, name: &str, pw: &str) -> Result<Self, LoginError> {
-        Log::create(db, format!("User '{name}' is trying to login...").into()).await;
+        Log::create(db, format!("User '{name}' is trying to login...")).await;
         let name = name.trim(); // just to make sure...
         let Some(user) = User::find_by_name(db, name).await else {
-            Log::create(db, format!("Username ({name}) not found").into()).await;
+            Log::create(db, format!("Username ({name}) not found")).await;
             return Err(LoginError::InvalidAuthenticationCombo); // Username not found
         };
 
         if user.deleted {
-            Log::create(db, format!("User ({name}) already deleted.").into()).await;
+            Log::create(db, format!("User ({name}) already deleted.")).await;
             return Err(LoginError::InvalidAuthenticationCombo); //User existed sometime ago; has
                                                                 //been deleted
         }
@@ -165,10 +165,10 @@ ORDER BY last_access DESC
             Some(user_pw) => {
                 let password_hash = &Self::get_hashed_pw(pw);
                 if password_hash == user_pw {
-                    Log::create(db, format!("User {name} successfully logged in").into()).await;
+                    Log::create(db, format!("User {name} successfully logged in")).await;
                     return Ok(user);
                 }
-                Log::create(db, format!("User {name} supplied the wrong PW").into()).await;
+                Log::create(db, format!("User {name} supplied the wrong PW")).await;
                 Err(LoginError::InvalidAuthenticationCombo)
             }
             None => {
diff --git a/src/tera/admin/boat.rs b/src/tera/admin/boat.rs
index d69d9df..b8007c9 100644
--- a/src/tera/admin/boat.rs
+++ b/src/tera/admin/boat.rs
@@ -1,5 +1,5 @@
 use crate::model::{
-    boat::Boat,
+    boat::{Boat, BoatToAdd, BoatToUpdate},
     location::Location,
     user::{AdminUser, User},
 };
@@ -8,7 +8,7 @@ use rocket::{
     get, post,
     request::FlashMessage,
     response::{Flash, Redirect},
-    routes, FromForm, Route, State,
+    routes, Route, State,
 };
 use rocket_dyn_templates::{tera::Context, Template};
 use sqlx::SqlitePool;
@@ -50,96 +50,39 @@ async fn delete(db: &State<SqlitePool>, _admin: AdminUser, boat: i32) -> Flash<R
     }
 }
 
-#[derive(FromForm)]
-struct BoatEditForm<'r> {
-    id: i32,
-    name: &'r str,
-    amount_seats: i64,
-    year_built: Option<i64>,
-    boatbuilder: Option<&'r str>,
-    default_shipmaster_only_steering: bool,
-    skull: bool,
-    external: bool,
-    location_id: Option<i64>,
-    owner: Option<i64>,
-}
-
 #[post("/boat", data = "<data>")]
 async fn update(
     db: &State<SqlitePool>,
-    data: Form<BoatEditForm<'_>>,
+    data: Form<BoatToUpdate<'_>>,
     _admin: AdminUser,
 ) -> Flash<Redirect> {
     let boat = Boat::find_by_id(db, data.id).await;
     let Some(boat) = boat else {
             return Flash::error(
                 Redirect::to("/admin/boat"),
-                format!("Boat with ID {} does not exist!", data.id),
+                "Boat does not exist!",
             )
     };
 
-    if !boat
-        .update(
-            db,
-            data.name,
-            data.amount_seats,
-            data.year_built,
-            data.boatbuilder,
-            data.default_shipmaster_only_steering,
-            data.skull,
-            data.external,
-            data.location_id,
-            data.owner,
-        )
-        .await
-    {
-        return Flash::error(
-            Redirect::to("/admin/boat"),
-            format!("Boat with ID {} could not be updated!", data.id),
-        );
+    if !boat.update(db, data.into_inner()).await {
+        return Flash::error(Redirect::to("/admin/boat"), "Boat could not be updated!");
     }
 
     Flash::success(Redirect::to("/admin/boat"), "Successfully updated boat")
 }
 
-#[derive(FromForm)]
-struct BoatAddForm<'r> {
-    name: &'r str,
-    amount_seats: i64,
-    year_built: Option<i64>,
-    boatbuilder: Option<&'r str>,
-    default_shipmaster_only_steering: bool,
-    skull: bool,
-    external: bool,
-    location_id: Option<i64>,
-    owner: Option<i64>,
-}
-
 #[post("/boat/new", data = "<data>")]
 async fn create(
     db: &State<SqlitePool>,
-    data: Form<BoatAddForm<'_>>,
+    data: Form<BoatToAdd<'_>>,
     _admin: AdminUser,
 ) -> Flash<Redirect> {
-    if Boat::create(
-        db,
-        data.name,
-        data.amount_seats,
-        data.year_built,
-        data.boatbuilder,
-        data.default_shipmaster_only_steering,
-        data.skull,
-        data.external,
-        data.location_id,
-        data.owner,
-    )
-    .await
-    {
+    if Boat::create(db, data.into_inner()).await {
         Flash::success(Redirect::to("/admin/boat"), "Successfully created boat")
     } else {
         Flash::error(
             Redirect::to("/admin/boat"),
-            format!("Error while creating boat {} in DB", data.name),
+            "Error while creating the boat in DB",
         )
     }
 }
diff --git a/src/tera/admin/planned_event.rs b/src/tera/admin/planned_event.rs
index 6e1a609..6d10216 100644
--- a/src/tera/admin/planned_event.rs
+++ b/src/tera/admin/planned_event.rs
@@ -4,22 +4,22 @@ use rocket::{
     response::{Flash, Redirect},
     routes, FromForm, Route, State,
 };
+use serde::Serialize;
 use sqlx::SqlitePool;
 
-use crate::model::{planned_event::PlannedEvent, tripdetails::TripDetails, user::AdminUser};
+use crate::model::{
+    planned_event::PlannedEvent,
+    tripdetails::{TripDetails, TripDetailsToAdd},
+    user::AdminUser,
+};
 
 //TODO: add constraints (e.g. planned_amount_cox > 0)
-#[derive(FromForm)]
+#[derive(FromForm, Serialize)]
 struct AddPlannedEventForm<'r> {
-    day: &'r str,
     name: &'r str,
     planned_amount_cox: i32,
-    allow_guests: bool,
-    planned_starting_time: &'r str,
-    max_people: i32,
-    always_show: bool,
-    notes: Option<&'r str>,
-    trip_type: Option<i64>,
+    #[serde(flatten)]
+    tripdetails: TripDetailsToAdd<'r>,
 }
 
 #[post("/planned-event", data = "<data>")]
@@ -28,17 +28,9 @@ async fn create(
     data: Form<AddPlannedEventForm<'_>>,
     _admin: AdminUser,
 ) -> Flash<Redirect> {
-    let trip_details_id = TripDetails::create(
-        db,
-        data.planned_starting_time,
-        data.max_people,
-        data.day,
-        data.notes,
-        data.allow_guests,
-        data.trip_type,
-        data.always_show,
-    )
-    .await;
+    let data = data.into_inner();
+
+    let trip_details_id = TripDetails::create(db, data.tripdetails).await;
 
     let trip_details = TripDetails::find_by_id(db, trip_details_id).await.unwrap(); //Okay, bc. we
                                                                                     //just created
diff --git a/src/tera/cox.rs b/src/tera/cox.rs
index 8d2a54f..2aecced 100644
--- a/src/tera/cox.rs
+++ b/src/tera/cox.rs
@@ -10,52 +10,29 @@ use crate::model::{
     log::Log,
     planned_event::PlannedEvent,
     trip::{CoxHelpError, Trip, TripDeleteError, TripUpdateError},
-    tripdetails::TripDetails,
+    tripdetails::{TripDetails, TripDetailsToAdd},
     user::CoxUser,
 };
 
-#[derive(FromForm)]
-struct AddTripForm<'r> {
-    day: String,
-    //TODO: properly parse `planned_starting_time`
-    planned_starting_time: &'r str,
-    #[field(validate = range(1..))]
-    max_people: i32,
-    notes: Option<&'r str>,
-    trip_type: Option<i64>,
-    allow_guests: bool,
-    always_show: bool,
-}
-
 #[post("/trip", data = "<data>")]
 async fn create(
     db: &State<SqlitePool>,
-    data: Form<AddTripForm<'_>>,
+    data: Form<TripDetailsToAdd<'_>>,
     cox: CoxUser,
 ) -> Flash<Redirect> {
-    let trip_details_id = TripDetails::create(
-        db,
-        data.planned_starting_time,
-        data.max_people,
-        &data.day,
-        data.notes,
-        data.allow_guests,
-        data.trip_type,
-        data.always_show,
-    )
-    .await;
+    let trip_details_id = TripDetails::create(db, data.into_inner()).await;
     let trip_details = TripDetails::find_by_id(db, trip_details_id).await.unwrap(); //Okay, bc just
                                                                                     //created
-    Trip::new_own(db, &cox, trip_details).await;
+    Trip::new_own(db, &cox, trip_details).await; //TODO: fix
 
-    Log::create(
-        db,
-        format!(
-            "Cox {} created trip on {} @ {} for {} rower",
-            cox.name, data.day, data.planned_starting_time, data.max_people,
-        ),
-    )
-    .await;
+    //Log::create(
+    //    db,
+    //    format!(
+    //        "Cox {} created trip on {} @ {} for {} rower",
+    //        cox.name, trip_details.day, trip_details.planned_starting_time, trip_details.max_people,
+    //    ),
+    //)
+    //.await;
 
     Flash::success(Redirect::to("/"), "Ausfahrt erfolgreich erstellt.")
 }
@@ -402,7 +379,7 @@ mod test {
         login.dispatch().await;
 
         let req = client.get("/join/1");
-        let response = req.dispatch().await;
+        let _ = req.dispatch().await;
 
         let req = client.get("/cox/join/1");
         let response = req.dispatch().await;
diff --git a/src/tera/log.rs b/src/tera/log.rs
index f7d6669..f268053 100644
--- a/src/tera/log.rs
+++ b/src/tera/log.rs
@@ -1,10 +1,9 @@
-use chrono::NaiveDateTime;
 use rocket::{
     form::Form,
     get, post,
     request::FlashMessage,
     response::{Flash, Redirect},
-    routes, FromForm, Route, State,
+    routes, Route, State,
 };
 use rocket_dyn_templates::Template;
 use sqlx::SqlitePool;
@@ -12,7 +11,7 @@ use tera::Context;
 
 use crate::model::{
     boat::Boat,
-    logbook::{Logbook, LogbookCreateError},
+    logbook::{LogToAdd, LogToFinalize, Logbook, LogbookCreateError},
     logtype::LogType,
     user::{AdminUser, User},
 };
@@ -47,40 +46,15 @@ async fn index(
     Template::render("log", context.into_json())
 }
 
-#[derive(FromForm)]
-struct LogAddForm {
-    boat_id: i32,
-    shipmaster: i64,
-    shipmaster_only_steering: bool,
-    departure: String,
-    arrival: Option<String>,
-    destination: Option<String>,
-    distance_in_km: Option<i64>,
-    comments: Option<String>,
-    logtype: Option<i64>,
-    rower: Vec<i64>,
-}
-
 #[post("/", data = "<data>")]
 async fn create(
     db: &State<SqlitePool>,
-    data: Form<LogAddForm>,
+    data: Form<LogToAdd>,
     _adminuser: AdminUser,
 ) -> Flash<Redirect> {
     match Logbook::create(
         db,
-        data.boat_id,
-        data.shipmaster,
-        data.shipmaster_only_steering,
-        NaiveDateTime::parse_from_str(&data.departure, "%Y-%m-%dT%H:%M").unwrap(), //TODO: fix
-        data.arrival
-            .clone()
-            .map(|a| NaiveDateTime::parse_from_str(&a, "%Y-%m-%dT%H:%M").unwrap()), //TODO: fix
-        data.destination.clone(),                                                  //TODO: fix
-        data.distance_in_km,
-        data.comments.clone(), //TODO: fix
-        data.logtype,
-        data.rower.clone(), //TODO: fix
+        data.into_inner()
     )
     .await
     {
@@ -92,19 +66,10 @@ async fn create(
     }
 }
 
-#[derive(FromForm)]
-struct LogHomeForm {
-    destination: String,
-    distance_in_km: i64,
-    comments: Option<String>,
-    logtype: Option<i64>,
-    rower: Vec<i64>,
-}
-
 #[post("/<logbook_id>", data = "<data>")]
 async fn home(
     db: &State<SqlitePool>,
-    data: Form<LogHomeForm>,
+    data: Form<LogToFinalize>,
     logbook_id: i32,
     _adminuser: AdminUser,
 ) -> Flash<Redirect> {
@@ -116,18 +81,7 @@ async fn home(
             )
     };
 
-    match logbook
-        .home(
-            db,
-            &_adminuser.user,
-            data.destination.clone(), //TODO: fixme
-            data.distance_in_km,
-            data.comments.clone(), //TODO: fixme
-            data.logtype,
-            data.rower.clone(), //TODO: fixme
-        )
-        .await
-    {
+    match logbook.home(db, &_adminuser.user, data.into_inner()).await {
         Ok(_) => Flash::success(Redirect::to("/log"), "Successfully updated log"),
         Err(_) => Flash::error(
             Redirect::to("/log"),