My brother had a similar experience, but he wasn't as lucky. A professional lobster fisherman, he was pulling pots (traps) all alone in the winter when he fell overboard. Not having a life jacket on, the dumb sh*t, he cut the floats off two pots and stuck them under his arms while watching his boat disappear in the distance.
The boat, on autopilot, grounded on beach, and here my brother got lucky: a friend spotted it, figured out what had happened, and called the Coast Guard. They spotted him with a chopper, hauled him in and airlifted him to Woods Hole (which has a care unit dedicated to hypothermia victims). He recovered fully, even though his body temperature was a record 82 degrees!
He remembers nothing of being rescued, or the trip to the hospital, and he gave up lobstering the same day (urged on by his wife!)
Jeff
"...reality is not nearly as lovely as the world of Liberal Land. No wonder so many people want to go there." - Tom Sowell