Air Circulation
In the northwest it is not uncommon to see boats with full boat covers, especially in the winter. They can be pricy, especially depending on the detailing, but they do protect the boat. One thing to consider in a humid climate is air circulation. The air should be able to circulate otherwise mold and mildew can develop.If you start with a new boat, even if the cover isn't used all the time, the gel coat will not need to be waxed as soon nor as often. Once the boat gets, say 8 to 10 years old it will need to be waxed several time a year to maintain some semblence of luster, maybe more in the south. Either that or you get that dull look. UV protection will help prevent the hatches from crazing, protect the gaskets, brightwork, and protect the interior. On the down side, boat covers can attract cats and this can be a real bumber. Also, taking the cover off and puting it on again can be a chore too. Attention to details can make this chore easier.