my first cat was a 1976 5.2, which is still in action at my club. New sails, new traveler track and one new hull later, but boat and rigging seem rock solid. One hull had a bolt rip up from the beam strap, but it was probably something I did while diassembling and reassembling to put the new tramp on. Im trying to convince the current owner to buy my F18 mast and sails and rev it up a little. It did have a spin on it back in the early 90's, but it was a poor designed spin(hey it was the 90's) and I didnt know any better, so I got rid of it. Anyway, good boats, probably stronger than what we get today.