Er, Adam, how do you not consider any of Florida the South? Do you not consider the Georgia counties bordering Florida to be the South either?
I consider so little of Florida to be Southern that for simplicity's sake, I just write-off the entirety of the state.
I'm very much a strict constructionist when it comes to the definition of the South! Florida isn't Southern, and of course neither is Texas, Oklahoma, Missouri, Kentucky...or God forbid, West Virginia, Maryland or Delaware. Usually, I'll even exclude those Louisiana freaks for all of that silly Francophone behavior. Virginia usually gets somewhat of a pass with me - even though they're totally not Southern anymore by most accounts - but there's a certain amount of historic cultural weight that I take into account and Virginia's is chock-full of Southron history.
I've made multiple maps with delineation before, but here's the most recent one that I had laying around for occasions like these!