There is an active catamaran fleet with about 70 boats on the windward side of Oahu. We recently had a big feature on them in "Catamaran Sailor" magazine. Go to the forum, Hawaii Hobie Cat Association, in our "Main Index" of forums. They don't post on there often, but there is a very recent post by ChrisMargaret. If you click on the username, you can get Chris Laletin's e-mail address, and he will tell you what is going on in Hawaii.

And check out the attachment picture from one of their recent events. <img src="http://www.catsailor.com/forums/images/graemlins/smile.gif" alt="" />