I would strongly suggest just bringing an inexpensive 2 piece spinning rod and some basic gear. Bring some bottom fishing equipment like small hooks and weights, then some lures like small spoons, spinners, bettle spin, and grub-type lures. Like others have said, you could leave it to some local kids if you don't want to bring it back.
I had much success on bonefish, small snapper, and small jacks fishing from the dock, but I was staying on the far north end where the shore fishing is probably better. Feel free to email me if you want some more specific info....I don't check this message board much. firstname.lastname@example.org