Please explain why a device that keeps one afloat is not wanted in cold water that tends to sap one’s strength and ability to stay afloat....
If the boat is about to capsize, you don’t want your life vest on because when the boat goes over you’ll get trapped under the boat. That’s what has been said above. Another thing the water wasn’t “cold”. It’s a lake in the middle of July, not the North Atlantic in January.