I had the same concerns earlier this year as i wanted to make a stop and not have to worry about getting there to get a ball. We reserved a slip at Scrub Island and spent a nice day on the water not worrying about it. It is a little pricey comparatively but the ladies loved the nice showers and facilities and the ferry runs every hour. Just another alternative to the ones above but it sure was nice not having to think about it all day long knowing the slip was secure.