I've stayed in Red Coconut and Beverly Beach. Both on the beach. More to do in Fort Myers Beach (Red Coconut). A lot more space in Beverly Beach. Beverly Beach is less than an hour from St. Augustine, lots to see and do there.They both have sites available in the summer months. I recently saw an article for 10 State Parks in Florida on the beach. They have good parks and are less expensive on the beach. Again summer should not be a problem. Have fun.
2703WS Rockwood Super Lite (6,400 Dry weight)
Tow Vehicle - 2010 Ford F-150 Super Crew
5.4L V-8 6-spd auto 2x2 9,800 Lbs. towing capacity.