Yeah, it's a bad idea. Changing to a bigger motor gives you two things, more weight and more push (thrust). Obviously, more weight on the stern will never make the bow go down. The direction of all that thrust is going to be pretty much exactly in line with the prop shaft. The trouble is that the prop shaft is already pointed toward the sky and pushing harder toward the sky won't make the bow go down.proman_11 wrote:
So does everyone disagree with my idea to get a bigger engine.
These are simplified explanations for sure, but there are bookshelves full of information on why boats are shaped the way they are. Most of it is about displacement hulls. There seems to be a zillion different concepts of what makes the best sailboat hull. Planing hulls don't get as much discussion because they must have a flat surface on the back end of the bottom in the fore and aft axis. About all that's left to talk about after that is how much V the bottom may or may not have.
Trim tabs won't help either. In order for them to have the force necessary, they would create too much drag. Same goes for doel-fins on the outboard.
There is only one way to make that hull drop at the bow while motoring:
Throttle BACK
It's all about those laws of physics. You just can't break them. Even if you try, one or another of those laws will break you first.