If you live in Florida there ought to be a s-load of Boston Whaler boats and huge variety of other nice saltwater capable boats aside from some on stern drive with carpet covered plyboard interior. If you want a Whaler you will either have to pony up the cash for a nice one or be willing to put some sweat equity into a beater. A 13 foot BW is an icon boat, you will pay for one if it is nice.
The water in the foam thing is way overblown.There is no rrason for there to be any significat water in the hull unless the boat has been severely abused. I would look for a trailered boat and no bottom coatings and that no matter what boat type you buy.
You clearly have no idea the purpose of the boat you want, only that you want a boat. You say bass fishing. I fish for bass using kayaks. A boat with high sides and safety rails and no trolling motor or an old stern drive for that matter is not going to be a very good bass boat. They need extremely low sides, casting decks and a big trolling motor.
If you plan on offshore then you want an outboard powered center console or dual console. There are two design trends in such boats, 1) those that are designed to shed water fast (Boston Whaler types) with lower sides, notched or open transoms and foam everywhere and those meant to keep water out (Grady types) with higher sides, closed transoms and sealed decks. All will be self bailing or nearly all are so. I would not buy a boat for ocean use that is not self bailing and does not have a sealed deck that is above waterline at rest, is not outboard and is not built to live in the salt.
My bass boat:
If you want a lake boat to pull people around on those tube things, then the plyboard and carpet stern drives are indeed nice for that sort of thing, if that is your thing.
H&D