You mention planing speed. I really don't understand that since I am a windsurfer and we actually do plan and that is where you get your speed. No plan = slog & Plan = fast.

How in the world can a Cat plan. The shape of the hull does not allow such a feat or the speed to plan would have to be like 100 mph.

Even a dirt bike can plan. I have seen these guys go in excess of 80 mph and plan on dirt bike knobby tires across water.

See this: http://youtube.com/watch?v=AnyTjURH-_I