My cousin built a house on a small island off the coast in northern Panama. One day he was out fishing when he fell overboard while the boat was in a slow troll. It took him 45 minutes of swimming to catch up to the boat which fortunately was not heading in a straight line but rather in a curved direction.
After realizing he couldn't catch it directly, he had to intercept it on its course. When he finally did, he was too exhausted to climb into the boat and had to rest on the rear swim platform until he had enough energy to climb in.
A friend got his outboard stuck so the boat was going in a tight circle. He jumped out and timed it to swim away before it circled back. Thankfully, he was right beside his dock. Somehow, the boat stayed pretty much in one spot as there wasn’t much current so didn’t hit anything. Circle, circle, circle until it ran out of gas.