I've sailed both boats and there is no question that the J/24 is a faster and more fun boat to sail. I suspect most of the negative comments above about the J/24 are by people who have never sailed one. By today's standards, the J/24 is a slug in comparison to the modern designed J/Boat, but it is still a fun boat to sail and the Catalina 22 is a yawn fest in comparison, but the Catalina 22, for what it offers (when the bottom is clean) is a nice little boat. Assuming it has the swing keel, the C-22 will blow the doors off a J/24 in two feet of water (with the keel up), but also remember that the Catalina 22 is not self-righting unless the keel is down and locked in place. The fact that the J/24 has a deeper fin keel makes it more stable and it will point much higher into the wind. Sailing in Hawai'i is not really comfortable in many cases because of the seas and exposure, but on a nice day, either boat will suffice. I assume you are trying to get into the Keehi Small Boat Basin (sp?) on the Sand Island Access Road by LaMariana YC. As far as the vermiculite bilge on older J/24's, if it has held up to this point, you are probably OK. If you hang the boat in the air and the keel is stable (doesn't sway from side to side), you are probably fine. I have done the modification from vermiculite to what is recommended and it includes removing all the vermiculite and then fiberglassing in thwart stringers (which for up to 10 years were provided by J/Boats as warranty - but no more). They also were supports for the floor, which had to be cut out to get at the vermiculite and the entire sump. As pictured above, a teak and holly sole was used to replace the original fiberglass floor. Another issue with early J/24's was the bottom of the main bulkhead became rotten and so the bulkheads had to be replaced. If the ones on the J you are looking at are solid, that is a good sign. For day sailing, the J/24 is great and two can easily sail the boat with main and headsail. For racing, you need a crew of 5 to accommodate all wind situations and to fly a kite.