Turn the boat off and ask them if they will pull you through there fishing area? This is a tough one. I believe I would (if tow was on other side) have to continue on and set down in the nearest hole and let them know you meant no disrespect but you had no choice but to go through under the situation of bottoming out, or before hand if possible, in which if they are gentlemen, would tell you to go ahead. But with your tow being on your side of the fishermen, it was a nice jester on your part to turn and give them the water.