Very true and I think people get a false sense of safety when on a pontoon too.
I was on the safety committee for the 2002 Tall Ships race for Royal Clarence Yard. One of the things that came out of the meetings we had was the thought that we should put barriers along the pontoons for public safety as there would be so many members of the public out on them.
It was felt that this would be more of a hinderance as there was more chance of someone suffering an injury due to crushing against a barrier than drowning if they fell in.
Still not sure about the logic of this but we risk assessed the problem away by having plenty of lifeguards on site during the public hours.
Our Berth Holders Association Treasurer rescued someone from the water between 2 boats at Littlehampton Marina on Boxing Day.
He happended to be on his boat for an hour that afternoon and heard a cry for help. The man he rescued had just slipped off the bathing platform of his boat and didn't have the strength to climb back up.
He was hypothermic by the time he was found and he had only been in hte water for 15 minutes.
He was wearing no life jacket at the time and, should he have lapsed into unconsciousness he would surely have drowned.
He was lucky.
Born to stuff!!