Sun. Heat. Humudity. Gators. Bugs. UGH.
Florida is a rough environment for anything that doesn't live indoors. The UV kills cars and boats and anything else left outside. If you own the home, I'd suggest a carport or other permanent way to get the boat out of the direct sun. How much more protection it can use depends on you. Armorall can help preserve the tires (it replaces the compounds the sun drives out) and wax protects the fiberglass--and that's not optional, it is mandatory for the long-term if you don't want chalky fiberglass.A lot of RV owners put covers on their wheels to protect the rubber, you can probably find (cloth) wheel covers at a local RV supply store.But the UV...will bleach out uncovered gauges, upholstery, dry out plastics (Armorall again). Tarps, covers, carport...do the best you can.