The Rave needs a breeze to get me up at 185 pounds- small whitecaps means 12-13 mph: then you are foiling along comfortably at say 16-17 mph. Fun tho. (til the wind drops or between puffs)
One wants to learn what one is doing properly before taking out small, breakable children. Please.
Do not hit heavy or submerged things: The first 2 demos I went to for a ride on a Rave- they were broken while I was looking at them, and I never got a ride. It took 2 more years to get a ride, so Guess how many of them I bought.

http://doranoster.com/
Look at Doran Oster's website for modifications like joysticks for the front foils. Adjustments (on the fly) of the angle of attack of the front foils are also very helpful. How do I know all this? I see Doran's Rave sitting on the beach every time we take our A-cats out sailing!