Shifu said..Step 1. Look downwind and behind you for the windsurfer overtaking at twice your speed. Please.

Smart windsurfer, given his unobstructed view, would anticipate the jump. Given his higher speed, he will have the options of slowing down, or change course upwind, or both. This is to obey maritime rule #1: avoid collision. Windsurfers are nice people, no?