The big problem with Florida rentals is you have 2 markets, rent it to big holiday companies for pennies (if your property is average size, location, no standout features etc) or rent it privately for more money.
If you want to make money from it yours needs to stand out from the crown of 1000's of other Florida holiday villas, and with the way flight prices are going there are less and less people paying decent money for the villa they stay at.
Some people I know are booked up all year round for a 3 bed villa charging £800 p/w and they make a modest profit, others are empty for 6 months of the year, but they still have to pay full costs of the tax, management companies, licence fees, maintainence, insurance etc....
I go 1-2 times a year and would love a holiday home there. But I dont think I would do it as a business.