New model changes if I was to do it again

I think I have too much boyancy in the boat and a simpler way would to make it with flat sides and bottom maybe even sheet metal. everything else being even all should be right.
The next two photos show the formwork being removed..

 The above photo shows the destruction of weeks of previous work.

This one shows the rear section being removed.

All the internals have been removed

This is the new verandah I built to work on out of the weather...
The plaster has disolved with water and this made the removal easier also using aquadere water soluible glue helped as well.