Actually, the videotaping idea might not be so bad.... I've had a few conversations with prominent tribal people about the Skokomish River, and they have denied knowledge of wrong-doing by their people. It may be a case of the head not knowing what the hand is doing.
The other comment I've heard is that the snagging is being done by white fishers. All true?? Probably not. But if the tribal leaders dont know whats going on on the river, they cant do anything about it. On the other hand, if they do, and still choose to do nothing about it, then there is recourse.
The Skok people profess to want to get along with the whites, at least the locals with vested interests in the region: property owners, etc. The belligerent attitudes most probably come from the same individuals who are involved with other illegal activities originating on the reservation, and may not always cave in to a bluff.
The fence cutting near the bridge can screw us all. The property owner there has been gracious enough for years to allow passage to the riverbank. By law, he's not required to, so if anyone sees that kind of stuff going on, do something about it. Its in everyone's best interest.
As far as the tribal bashing, well, consider the fact that their ancestors lived in this territory for approximately 12,000 years before you whites came here. 157 years ago some people came to them and signed treaties to protect lives; mostly white.
Those treaties were violated nearly every day by the whites, whenever it suited them, and have only been supported by the government for the last 27 years or so. Is there some over-reaction going on? Sure. But according to the treaties, you, as a white, are no more entitled to those fish than the tribes. But no less, either.
Treaty language say: "In common with...".

The problem we have today is not with the tribes, so far as methods are concerned, but with the Liberal US Government policies as interpreted and managed by agencies like NMFS, and their method of allocations of fishery harvests.
Drop the attitudes, and use your powers of reason. Otherwise you're not that well evolved from your ancestors un the jungle.
Someone on this website posted the slogan: United we stand, divided we beg. This just might be one of the issues where that's appropriate.