Cover by Robert McGinnis
PS: In case you were planning a trip there, from what I can tell Ramona Beach, Florida is not a real place. Unlike Fort Lauderdale where Travis McGee docks his houseboat, the Busted Flush, at the Bahia Mar Marina. (FYI: Just McGee and, presumably, the houseboat are fictional.)
PPS: While we're on the subject, interested parties can check out a Dell edition with an alternate McGinnis cover here.