Another site, that I really find helpful:http://freecampsites.net/#!Florida!, and it shows the free or cheap sites on a map.
Here is one option:http://freecampsites.net/Davenport Landing over in Possum Bluff, FL(my kinda town)
On my recent trip to Wyoming, I found some nice spot for 10-12 dollars a night, and with my current
rv trailer, I can run it on solar, and batteries, it is pretty good for boondocking, as is the Tacoma.
Here is a video of Peter Tosh, great for a morning listen:
"Woke up this morning, with a funny funny feeling...."