Used my 8wt in Mexico on bonefish, etc. Worked fine. However, get a bonefish or other line made for the tropics. They are stiffer than lines made for here as the heat makes our lines go limp and floppy. Once home take it off to await your next trip down south. Clousers and other shrimp imitators are good. Just set strip like crazy, way more and harder than you think you should.
You can also use your regular fishing rod and tackle, spoons, jugs, etc. See that more often off the beach than flyrods, which are more common on the flats.