We were fishing out of Muskegon in June and had one cut across the back and take out my 200,250,300 coppers, lost all boards and tackle. I only salvaged the backer which was power pro and did not break right away. That sail boat received a very friendly visit after pulling all the lines. I am pretty sure he understood how stupid he was and that was a costly mistake for him. Besides this incident I have had to use my large airhorn 3 other times for sail boats cutting across the back within 150'. None of these had sails up, all under easy control of a motor. I really really dislike the blow boat folks. No respect........