There's only one I know of and it's on the north shore. It needs some work and it doesn't have a trailer. there are two more 1 in Kailua and 1 in Kaneohe but the owners are stuborn and won't sell. but they won't sail'em either.
Come down to the club on the first Saturday of the month 9am and we'll get you hooked up with a phone number for the one that is for sale.
PS I think we talked at the club before (you were walking your dog?)