Hobie now sells the Tiger spin as the standard H20 spin. They switched over last year. The Tiger spin should work great on the H20. I have an older design spin for my 20 with 350 sq ft of sail. It is attached 42" up the comptip from the aluminum mast. I have rigged running backstays on it. I've talked to other H20 owners who are trying out the Tiger chute.
I hardly ever use mine because I don't have a snuffer and the deck get's pretty cluttered. I rig it when I do distance racing. It is really fast. The helm on the H20 gets tons of lee helm which takes some getting use to with the chute. This is because the center of effort is in the wrong place when the chute is added. Still goes fast but is kind of a weird sensation.
Feel free to contact me with other questions.
Mike Hill
H20 #907