Not so....my Scout was permitted to work on his Canoeing MB without regard to the fact of the Scout's swimming ability.
This statement makes me scratch my head. It seems, Engineer61, you were not present so to make this statement without being there is wrong. What part of the Canoeing MB was your son working on? It isn't all done in the water. What is your son's swimming ability? If a life jacket is properly worn, it works very well.