At White Bay as we were coming into the channel an idiot was swimming from a catamoran anchored just inside the anchorage across to another right across the channel entrance! He didn't look like he was ready to write me out a large check to cover the deductible if I had to put that boat on the reef to miss him and I am sure if I just ran him down that would have ruined some vacations so I understand when a non-violent person says they wanted to punch a swimmer (of course it never amounted to any thing more than a few hand gestures...) to add he wasn't really swimming rather floating over with drink in hand as you do...