diff --git a/frontend/main.ts b/frontend/main.ts
index 3d4fcf2..ab42d06 100644
--- a/frontend/main.ts
+++ b/frontend/main.ts
@@ -104,7 +104,6 @@ function setMaxAmountRowers(name: string, rowers: number) {
     //}
 
     let input = <HTMLElement>document.querySelector('#'+name);
-
     if(input) {
       choiceObjects[name].config.maxItemCount = rowers;
       if (rowers === 0) {
@@ -201,7 +200,6 @@ interface ChoiceEvent extends Event{
 }
 
 function initNewChoice(select: HTMLInputElement) {
-
   let seats = 0;
   if (select.dataset && select.dataset.seats) {
     seats = +select.dataset.seats;
diff --git a/src/model/logbook.rs b/src/model/logbook.rs
index f03f209..b856afa 100644
--- a/src/model/logbook.rs
+++ b/src/model/logbook.rs
@@ -124,7 +124,7 @@ pub enum LogbookCreateError {
 
 impl From<LogbookUpdateError> for LogbookCreateError {
     fn from(value: LogbookUpdateError) -> Self {
-        return match value {
+        match value {
             LogbookUpdateError::NotYourEntry => LogbookCreateError::NotYourEntry,
             LogbookUpdateError::TooManyRowers(a, b) => LogbookCreateError::TooManyRowers(a, b),
             LogbookUpdateError::RowerCreateError(a, b) => {
@@ -140,7 +140,7 @@ impl From<LogbookUpdateError> for LogbookCreateError {
             LogbookUpdateError::UserNotAllowedToUseBoat => {
                 LogbookCreateError::UserNotAllowedToUseBoat
             }
-        };
+        }
     }
 }
 
@@ -429,7 +429,7 @@ ORDER BY departure DESC
             return Err(LogbookUpdateError::SteeringPersonNotInRowers);
         }
 
-        if !boat.shipmaster_allowed(&user).await && self.shipmaster != user.id {
+        if !boat.shipmaster_allowed(user).await && self.shipmaster != user.id {
             //second part:
             //shipmaster has
             //entered a
diff --git a/src/tera/ergo.rs b/src/tera/ergo.rs
index b2a8aab..b2decf6 100644
--- a/src/tera/ergo.rs
+++ b/src/tera/ergo.rs
@@ -67,11 +67,7 @@ async fn reset(db: &State<SqlitePool>, _user: AdminUser) -> Flash<Redirect> {
 }
 
 #[get("/")]
-async fn index(
-    db: &State<SqlitePool>,
-    user: NonGuestUser,
-    flash: Option<FlashMessage<'_>>,
-) -> Template {
+async fn index(db: &State<SqlitePool>, user: User, flash: Option<FlashMessage<'_>>) -> Template {
     let users = User::ergo(db).await;
 
     let thirty = sqlx::query_as!(
@@ -94,7 +90,7 @@ async fn index(
     if let Some(msg) = flash {
         context.insert("flash", &msg.into_inner());
     }
-    context.insert("loggedin_user", &user.user);
+    context.insert("loggedin_user", &user);
     context.insert("users", &users);
     context.insert("thirty", &thirty);
     context.insert("dozen", &dozen);
@@ -113,7 +109,7 @@ pub struct ErgoToAdd<'a> {
 async fn new_thirty(
     db: &State<SqlitePool>,
     mut data: Form<ErgoToAdd<'_>>,
-    created_by: NonGuestUser,
+    created_by: User,
 ) -> Flash<Redirect> {
     let user = User::find_by_id(db, data.user as i32).await.unwrap();
 
@@ -139,10 +135,7 @@ async fn new_thirty(
 
     Log::create(
         db,
-        format!(
-            "{} created thirty-ergo entry: {data:?}",
-            created_by.user.name
-        ),
+        format!("{} created thirty-ergo entry: {data:?}", created_by.name),
     )
     .await;
 
@@ -153,7 +146,7 @@ async fn new_thirty(
 async fn new_dozen(
     db: &State<SqlitePool>,
     mut data: Form<ErgoToAdd<'_>>,
-    created_by: NonGuestUser,
+    created_by: User,
 ) -> Flash<Redirect> {
     let user = User::find_by_id(db, data.user as i32).await.unwrap();
 
@@ -179,10 +172,7 @@ async fn new_dozen(
 
     Log::create(
         db,
-        format!(
-            "{} created dozen-ergo entry: {data:?}",
-            created_by.user.name
-        ),
+        format!("{} created dozen-ergo entry: {data:?}", created_by.name),
     )
     .await;
 
diff --git a/src/tera/log.rs b/src/tera/log.rs
index 013b67f..f9ee2fb 100644
--- a/src/tera/log.rs
+++ b/src/tera/log.rs
@@ -217,12 +217,10 @@ async fn create_kiosk(
         User::find_by_id(db, boat.owner.unwrap() as i32)
             .await
             .unwrap()
+    } else if let Some(shipmaster) = data.shipmaster {
+        User::find_by_id(db, shipmaster as i32).await.unwrap()
     } else {
-        if let Some(shipmaster) = data.shipmaster {
-            User::find_by_id(db, shipmaster as i32).await.unwrap()
-        } else {
-            User::find_by_id(db, data.rowers[0] as i32).await.unwrap()
-        }
+        User::find_by_id(db, data.rowers[0] as i32).await.unwrap()
     };
     Log::create(
         db,
diff --git a/templates/includes/forms/log.html.tera b/templates/includes/forms/log.html.tera
index d31c984..72c3447 100644
--- a/templates/includes/forms/log.html.tera
+++ b/templates/includes/forms/log.html.tera
@@ -181,7 +181,7 @@
         {% endif %}
       </small>
       {% set amount_rowers = log.rowers | length %}
-        {% set amount_guests = log.boat.amount_seats - amount_rowers -1 %}
+        {% set amount_guests = log.boat.amount_seats - amount_rowers %}
         {% if allowed_to_close and state == "on_water" %}
           {{ log::home(log=log, only_ones=only_ones) }}
         {% else %}
diff --git a/templates/includes/macros.html.tera b/templates/includes/macros.html.tera
index c38f59b..5404eef 100644
--- a/templates/includes/macros.html.tera
+++ b/templates/includes/macros.html.tera
@@ -19,6 +19,29 @@
           {% include "includes/question-icon" %}
           <span class="sr-only">FAQs</span>
         </a>
+        {% if loggedin_user.is_guest and loggedin_user.weight and loggedin_user.sex and loggedin_user.dob %}
+          <a
+            href="#"
+            class="inline-flex justify-center rounded-md bg-primary-600 mx-1 px-3 py-2 text-sm font-semibold text-white hover:bg-primary-500 focus-visible:outline focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-primary-600 cursor-pointer"
+            data-sidebar="true"
+            data-trigger="sidebar"
+            data-header="Ergo Challenge"
+            data-body="#mobile-menu-guest"
+          >
+            {% include "includes/book" %}
+            <span class="sr-only">Ergo</span>
+          </a>
+          <div class="hidden">
+            <div id="mobile-menu-guest">
+              <a
+                href="/ergo"
+                class="block w-100 py-2 hover:text-primary-600 border-t"
+              >
+                Ergo
+              </a>
+            </div>
+          </div>
+	      {% endif %}
         {% if not loggedin_user.is_guest %}
         <a
           href="#"
@@ -78,7 +101,8 @@
             </a>
           </div>
         </div>
-        {% endif %} {% if loggedin_user.is_admin %}
+        {% endif %}
+	      {% if loggedin_user.is_admin %}
         <a
           href="/admin/user"
           class="inline-flex justify-center rounded-md bg-primary-600 mx-1 px-3 py-2 text-sm font-semibold text-white hover:bg-primary-500 focus-visible:outline focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-primary-600 cursor-pointer"
@@ -151,7 +175,7 @@
 				<option selected value>{{ default }}</option>
 			{% endif %}
 			{% for d in data %}
-				<option value="{{ d.id }}" {% if d.id == selected_id %} selected {% endif %} {% if extras != '' %} {% for extra in extras %} {% if extra != 'on_water' %} data- {{extra}}={{d[extra]}} {% else %} {% if d[extra] %} disabled {% endif %} {% endif %} {% endfor %} {% endif %} {% if show_seats %} data-custom-properties='{"amount_seats": {{ d["amount_seats"] }}, "owner": {{ d["owner"] }}}'{% endif %}>
+				<option value="{{ d.id }}" {% if d.id == selected_id %} selected {% endif %} {% if extras != '' %} {% for extra in extras %} {% if extra != 'on_water' %} data- {{extra}}={{d[extra]}} {% else %} {% if d[extra] %} disabled {% endif %} {% endif %} {% endfor %} {% endif %} {% if show_seats %} data-custom-properties='{"amount_seats": {{ d["amount_seats"] }}, "owner": "{{ d["owner"] }}"}'{% endif %}>
 					{% for displa in display -%}
 						{%- if d[displa] -%}
 							{{- d[displa] -}}