We have stayed at Alafia River state park which is about 45 minutes SE of Tampa. here is a link to the web site
http://www.floridastateparks.org/ala...Activities.cfm
The sites are mostly pull throughs, widely spaced with water and electric. There is a dumpstation and lots of trails and access to the water.
We posted a picture of our site in this thread....
http://www.trailmanorowners.com/foru...4760#post44760