As a fellow boater , living in N Y ,
buying a boat leaving at a fla marina till I moved down I know the feeling
Thousands of miles away you want too know your boat is secure
Many marinas have areas too park your boat on your
trailer
In my area Space Coast FLa Quote $ 250 a month for a 31 foot on my
trailer
Hit
Google finding all the marinas within a certain radius your willing too drive
start calling you might luck out ,
Other option Try too locate a storage facility that stores high end
boats & RV's ,
You & your boat will be secure
Don't know if they are a franchise operation ? In my area there is a place called
Adult Toy Storage , they offer covered or outdoor storage for adult toys ,
Boats / RVs
Pricing for my boat on trailer outside apx 125 a month ,
Good luck