I'm of the same opinion of Nailknot, I'd keep an eye and ear out at the location of the crime. These people, for whatever there political fishing reason commited a crime and should be accountable and brought to justice. -Seriously. I agree with one of the other posters here who said, "did you contact the police?". I think it is very fair to allow someone who is physically challenged to practice the method the WDFW lays out for them in these "fly-only waters". (Even though I don't agree w/many other things the WDFW does..) I can imagine that it must be extremely uncomfortable for that individual to fish in these locations without feeling the guilt from others who may be nearby. Maybe a great way to combat some of the activities these loosers did to our poster is to have an identifiable sticker label on the car signifying clearly that this person is a "disabled" WDFW License Holder. Then, IF they see the sticker they may think twice and might feel some compassion before they act. --It might help a little in some instances anyway. It sure wouldn't hurt.... Maybe the Orvis Magazine and Power Bar thing isn't a bad deterant either!
I have one question for the original poster though, -why did you select this particular body of water to fish say over another non-fly strict area? -Just curious? And, was it clear to you after comments from some of these fly-guys that they were the perpetrators? -O.K...that's two questions.

Nailknot,

Hey, were you the one hammering on the post on the Washington Fly Fishing forum regarding user name "sinktips" comments?

Good Fishing, Darin
Oh, by the way, it looks like we got some night fishermen out tonight from the times posted!