Yes you are belittling me.
What does power curve via hull drag and all that have to do with this subject anyway?
Are trying to make a high speed RV Bus/Boat?
For your information WW2 "Duks" are able and willing to travel like a boat; they even crossed the English channel....
Since you are and "Engineer" then you know the amount of TONNAGE in ballast YOU WILL HAVE TO ADD to keep from capsizing in the water.
Also you can't just cut the front of a bus and make a "Hull" angled nose; the vehicle "bus" frame can't take that kind of stress; Oh I forgot Your an engineer..
As myself and we all await eagerly the finished project..
So knock yourself out..