Theres a lot of truth to this. When I was younger I was what I would consider a pretty strong swimmer. Two summers ago I had the bright idea to take my fat hiny swimming with my son. Over the years my body must have become more dense. I couldn't stay a afloat if my life depended on it and became winded in a hurry. I'am now a lot more careful in a boat in case I were to fall overboard for whatever reason. Before I figured if I would fall in it would be no big deal "I'm a good swimmer". Not so sure anymore. I damn near fell in up at the tailrace releasing a paddle fish one spring. Looking back I probably wouldn't have faired so well.I don't duck hunt anymore, however found myself in some "sinky" sloughs back when, and a guy can get pretty wiped out trudging through that, now add fifty pounds of weight gain, and 20 years of age, and I would likely not make it out of some of the places I would back when.
Sad deal, sorry for the family.