Rats are not unique to any one place in Florida. Boats stored on the hard
need some wildlife security
in Florida. Rats, raccoons, squirrels, mud-daubers, snakes, iguanas and more can homestead on an unattended boat in Florida.
I think the best measures are to secure all openings,- even some hardware
cloth at some openings where other materials could be chewed through. In addition, it's wise to open some naphthalene packets inside to discourage intruders and prevent mold
Also, some set-ups don't do well with the high volumes of rain and drains & scuppers potentially clogged with leaves.