Fort De Soto Park Campground in St. Petersburg was ranked No. 2 in Florida in a list of the 10 most popular RV campsites compiled by travel publication Islands. Topsail Hill Preserve State Park Campground in Santa Rosa Beach took the top spot. The ranking was based on reputation, recommendations, expert opinion, facilities and user feedback. Fort De Soto has 151 sites suitable for RVs up to 40 feet, with 30- to 50-amp electric and water hookups but no sewer hookups; nightly rates start at around $48, with waterfront sites slightly higher. The park has 238 sites in total, all with water, electricity, charcoal grills and picnic tables, and reservations can fill up months in advance.