Also, check out City of.Bradenton Beach Mooring field is somewhat protected and close to amenities .... was free....recently changed to require boats to register with a small $5.00-10.00 dollar registration fee of some kind..There are even companies that will take care of your boat while in the water..
On the hard for 8 months or so...then check these Cities/ marinas
Snead Island Boatyard marina in Palmetto,Florida. I would also check out Apollo Beach( 15 miles south of Tampa)
New Port Richey (30 miles north of Tampa)
Tarpon Springs 10-15 miles north of Clearwater/St. Petersburg area
Also might want to look at sharing your boat with someone who lives in Florida and can take care of her when your gone..look up any old friiends you may have down here if any ....