If you are fortunate enough to have a place where you can keep cats on the beach, mast up, all season, I would think you would have a long waiting list of people who want to get in there.

If so, I would think that in itself would be enough to motivate people to follow the rules so they can keep their spots on the beach.

It is probably not a good idea to get the park officials in the middle of this dispute among the sailors, because you never know when the Park is going to say, "Hey, these sailboats are too much of a hassle -- let's not give them space here any more."

Where are you in relation to Chicago? What park?