What distinguishes between a speed hull and a deep v hull. I ask because I know my 230 scorpion is not really considered a speed hull. It is a 21* hull with no hook and a 2 1/4" chine. The boat handles great in all types of water especially after adding trim tabs to it. Any insight on hull design would be greatly appreciated.
Part two of my question is, with close to a 375-400 hp (@ 5000) vortec smallblock going in this fall what prop should I try. The boat has a cobra outdrive (I believe it 1.4 ratio) I would like to get as close to 60 mph as possible.

19P or 21P Mirage.