[Superman]

I've spent a fair bit of time in boats on lakes. For reasons I cannot explain, outboard motors are very fast. Hydroplanes do not use outboard motors, obviously, and speed boats usually do not use outboards, but the fastest boats I have personally encountered have been outboards.

Also, probably because fluids are inelastic and because propellors do not rely on friction like tires do, acceleration launches in fast boats are sometimes what I would call "violent." Far too strong for a skier to hold onto the handle.