I rescued two people from certain drowning once. They were taken out by the rip current that runs along one side of the beach at the bridge. Was tying my boat off at my marina when we heard the screams over by the bridge, and quickly untied and roared over there. The first, a fairly young fella, was almost completely gone and we barely managed to grapple and get a hook on him as he sank below the surface. Had we arrived even 30 seconds later, we would have had no idea where to start grappling for the kid in that murky water. The second was his father or uncle and was attempting to assist the kid and clearly losing his struggle (idiot had cowboy boats on...) but was still on the surface. Got both of them in the boat and got the younger one revived and lungs dewatered. Went straight to my pier where other family members, who had been the ones screaming on the beach, met us. I suggested calling 911..they said they would. I went inside to grab a beer and chill.
Not 10 minutes later, I looked out at my boat on the pier and there was nobody there. Went down to inspect closer and nothing was left but a large pool of vomit on the deck of my boat....effects of all the saltwater on the kid who was closest to drowning. They just friggin' left...not so much as one "thank you". Nothing.