I have to agree with LZZ. I think it may work. The only problem I can think of has already been stated. It is, "well, I can snag over there, why not here?". Just the same a legal dope. I don't have a problem with most pot heads, they are too slow to cause much problem. But when they move to the next bigger and better high, crack, they become a real pain in the butt. In most of these snag fests the hatchery is fairly close. Why not put up some "traffic" cameras? This way the gamies can sit in comfort, sipping coffee, and zoom in on snaggers. When they record enough for court, hop into their rig and go write the dumbarse up. These camera then can be put into pan and scan mode to record after hours. They make great heavy duty cases to protect the cameras. It is not really that expensive either. It is awful hard to fight recorded footage in court. And if filming up women's skirts in public is not an invasion of privacy, then taping rivers wouldn't be either.