We store a 34 foot Airstream RV and there are many large Motor Homes plus boats at the Village Self Storage if you wanted dry storage. This is not owned by The Villages but very close in Oxford (Two minutes away) We pay $52.00 a month and it is gated so secure. The Villages also have two storage places. There are several clubs here such as the Sailing Club or Deep Fishing club, etc that would have information on rental of slips to store the boat if you wanted to keep it in the water. There are lakes everywhere so I am sure you would not have a problem for storage.
Hope this helps!