Thanks Joe from JoyriderTV, for the answer I have asked my self for very long time actually.
- Hull shape, One side is flat like a surf-board, and “plan on its side on water”
- Design purpose, Hobie was never designed for upwind/downwind like F18
- Jib, gives great speed and you can reach higher and get more power than gennaker
- No center boards that stop up the speed

Great channel by the way, go in an watch!