depends on where u are headed in florida, but i can offer a few spots all over. In st.pete area, look for Ft. DeSoto park. They have camping and a nice boat ramp. you can do lots of intercoastal sailing and it's just a short trip past the islands to the gulf. takes me 20 minutes to get out in real open waters in my 16. then u can sail to egmont key historic military base....very cool.
if you are going to be as far south as miami, there is always the famous hobie beach, a little strip of causway leading out to key biscayne. CABB has thier meetings there. no boat ramp but it's easy to put in by hand, even without beach wheels.
finally, if you are going down to the keys, check out bahia honda st park on long key. little trick to get out of the boat ramp area, but the view and sailing is unbeatable. some camp sites you can pull the boat right up to your tent.
hope that helps have fun
-j