When I first started charting in the early 80's I never saw it and many bottoms were all scrapped up. More and more operators have been doing that. I have witnessed many putting a guy overboard look as soon as the boat hits the dock. Some with cameras, some without. It is a revenue generator and can make life better for the operators like Horizon who directly bill the owner for any issue. Moorings/Sunsail spread the cost out across all participants and do any repairs directly from the Moorings/Sunsail checkbook.