@Suty I am very interested in this capability also. In the settings on my phone (Android) I see the setting for "Startup layer and location". The layer changes what animation I see on the screen (I changed it to Waves), but it does not change the type of forecast. I have to tap "Display as:" every time I open the app, and choose Wave and tide. I would think that any boater would need to do the same.
I would greatly appreciate this functionality being added.