I was talking with a older gentleman the other day, he told me he hit stump while fishing and fell out of the boat. After hitting the trolling motor and and stump, (top of a tree) he had broke his arm, leg, ribs and hip, and koed him. When he woke up he was laying on the bottom in 18 ft of water. I do a lot of night fishing and thought if I fell out , would I know up from down in the dark or would I panic.For that reason I got the auto inflate because I know I wouldnt switch after motoring and started fishing.