Yes, lets warn the boats. It is true swimmers can be snorkeling and not pay attention if they get outside the ropes, but they shouldn't have to worry if they do, to get whacked by a boat. Also, I assume Alfred's puts their dock out to swim to, and that is way beyond the roped area. I use to love to swim out there butwon't anymore. John's idea is great, a buffer zone. These boats are getting to close for advertisement .