We stopped in at Cooper for lunch last month using an unused BoatyBall. We were ready to go if an aggrieved renter arrived but had a nice lunch on the way to Norman. We also used bb to make sure we had a ball (for ease of mind) after a longer passage (e.g Jost to North Sound). We always got one, but they went quickly. One thing, some of the balls at Cooper are a little close together ( sorry can’t recall the numbers). Two cats kissed at 3am when we were there - oddly I was up to witness because our ball was slapping against the hull. There was no wind to organize the boats on the moorings so they were all swinging this way and that.