John, come on down to Kokokahi Sail Club this Saturday 9am
We are located on the water behind the Kokokahi YWCA in Kaneohe. You can't miss us, just look for sixty or so masts down by the water. Saturday is a club clean-up day and a regatta after. Might be able to get on a boat or find one for sale.
The largest fleet now is the Hobie 20's but I don't know if you will find one for sale.