no of course not , I did not know the guy is challenged , but maybe neither did the jet boater .Common sense is you attack somebody be prepared to back it up . I hate violence it usually just amplifies the problem but at the same time that boater had to work hard to purchase his boat and feel it and had every right ( even though I think the Vedder is not a river to jet boat on my opinion) to access the river with his boat .The victim throws a rock at your boat the guy snapped it happens but had the rock not been thrown there would not have been a confrontation .It comes down to treat people the way you would want to be treated throw rocks at people well you can guess what comes next . ive fished the Vedder since 1982 fisherman always get along even when it is really crowded , because you appreciate the company and you all have something in common the love to fish