If I lived down there I would likely try to call some local game wardens and see if I could pick up some info, then scout it and hunt it.
I went the paid route because it was a quick trip and I didn't want to spend days hunting/scouting. We made that whole trip in five days and spent some time at the beach and snorkeling as well.
If I lived there I'd definitely try to find some public Access that had hogs though if possible
-Jake