I figured they would let me know when my time was up, by either coming to get me or waving me down. They did neither, finally I got tired and came in, and the guy said, you were out there longer than the hour. I explained that I di not have a watch and thought they would let me know, and he said not to worry about it. I think it was a slow day for them, no one was waiting for a jet ski, so I dont think it was a big deal.