Mine actually did fall OB
He was about 1 at the time. We were on our way home from a days worth of fun. He was at the bow with his Mom when suddenly he fell over. It was near midnight but a quiet night. I waited till he floated by the stern where I was driving. I released the helm to my brother in law and jumped in after him. There was no time to give directions to the others on-board. The boat kept going but David and I were wondering if they were ever going to turn around. Now try to imagine a total novice at the helm trying to do a 180 to retrace their course. The boat headed off at 135 relative. I figured I would have to swim all the way home (about 2 miles)with my son in tow. In college I had been a lifeguard so the swim was not a big deal to me, but it sure would be nice to ride home instead. While I swam, David was screaming at the boat. Finally they heard him and changed course toward us. We climbed back aboard and headed home. Davids 'sound beacon' was a good locater for them to find us. David had learned to swim when he was six weeks old so being in the water with Dad was not really a worry to him. Not so his Mom, she was ... shall we say, upset. Ah well, alls that ends well. David is now a 6'6" 24 year old.