Like stated above if you are only going to use it once or twice during your stay, RENT. It is not worth the hassle. If you are staying for a week or longer and plan on using it bring her with you. It is nice to stay at a place with dockage,you just walk out and go for a boat ride at any time you want.
just saw your new post: Key Colony Beach is a great place to stay with dockage. Very easy access to Florida bay or the Ocean.