The Sarasota Sailling Squadron is a sailing club at the end of Radio Road, (now called the Ken Thompson Parkway) on the bay side, on the south side of the bridge that goes over the cut that goes out to the Gulf. There are lots of cats stored there mast up, and even more mono's. I don't think those cats do any real fleet type racing, more for day sailing. But you could launch at the park right outside of the gate to the club, or inside if they will allow you a month's storage (for a fee?) They have a small beach to use for launching inside and outside of the club.

http://www.sarasotasailingsquad.com/directions