who did you call, let it fly? I know one of the game officers in the local area is hot to catch anyone on the green anytime. Drop me a pm, and I'll give you her cellphone number. Call her and tell her exactly where your at and what's happening, and I beleive she will hightail it over to you.
When you call 911, tell them you need WSP dispatch because you have a fishing violation in progress. WDFW is dispatched by WSP. Give them your cell number, if you have one, so they can contact you right away and let you know if they are on their way and want you to wait.
Also, you should probably try to be as NON-Confrontational as possible while filming the violations. I realize a big strong Iraqi war vet like you isn't afraid of anyone or anything, but there is no sense in getting into a scuffle or something and ending up in jail over these type of violations...no matter how mad you are over it.
If you could film them without them realizing what you are doing, and contact the WDFW without letting the violators know your calling the gamies, the WDFW would probably have a better chance of catching the violators in the act.
Another thing, film all the license plates before you walk down to the river, that way if anyone runs and leaves in their car before the gamies can get them, you will at least still have a plate number that they can run and check against valid fishing licenses.
I know most of the gamies have an email address that you can send the video and pictures too. I just did this a couple of weeks ago with some yahoos I caught driving in non-motorized vehicle area. Sent the pics and video to one of the gamies, and he wrote 4 trespass citations from the video. With face shots of the drivers, and good film of the plates as the vehicles are coming up the road...it was hard to deny it was them.
Also, I only live a couple of minutes from the Hwy 18 bridges over the green river, so give me a call sometime and maybe we could get down there together...one of us could stay up by the cars and film, and the other could go down and film along the river. Then we get them in the act down at the river, and get them in the act up at their cars hiding the fish or whatever...