That's what I am saying, it's design, not material, but, it needs to be useful, no use having 600hp on the back of the worlds deepest V in a skinny boat, but you can't stop to fish, I know you can build an alloy boat that will ride just as good, most Aluminium cats ride much better, but, compromises are the name of the game, but, once again, that's not what the original question was about.