Compliments to L124C for attempting to educate the ill experienced, and for warning the dock mates. I respectfully submit further efforts are warranted. How would you feel if the young female crew slipped on jumping off the boat, got caught between the onrushing boat and dock, and seriously injured. It is of course extremely hard to educate those who would not learn. Think outside the box. How about learning when he is next going out, putting your wife at the helm, and then very quietly walking the boat out, and without a single spoken command, getting under way. Several times. How about setting up a scene beforehand, and while he is watching, depart halfway out your slip, then call out, did we get the xyz?, quietly reversing back into the slip, going to the car, getting a jacket, and then departing again, quietly. Next time everybody is coming in at the end of the day, hollering at the speedster that you have some extra food you would rather eat here than carry home, could he send his girls over to help chow down, and then while feeding the girls, quietly praise all the skippers showing expertise coming in. Is there a junior sailing program around. Could the girls be educated? Could you send a very polite helpful note to the harbor master stating that you have noticed it is hard to get boats like such and such into slips on such and such pier, is their another slip which might be easier to get into and out of? Would his wife enjoy taking one of the ladies only winter sailing courses? Just ideas.