I have stealth-camped in FL but picking a location is key. I have had luck near some highway exits--a convenience store, a couple motels, and some space between and behind where no one goes. That way you can use the store restroom and sneak into the hotel pool for a wash in the very early morning. Otherwise ... not too easy to find a spot, but if you are really low-key ...

I wouldn't bother with a tent, just roll out a tarp and the sleeping bag---more "crashing" than camping---no "campsite." Roll on to some other area to relax and spread out for a meal or whatever. Save your sleeping hole for sleeping.

EDIT--Everything staehpj1 says.

If you avoid the heavily urban sections, there is a Lot of land in Florida where you can do anything you want. And at the right time of year the insects are more subdued and the weather is perfect. Then there are nine months of summer.