Welp... seems now we're at the point where the first place we can start (and I know it's happened) is to POLITELY educate the nimrods if we see them either do any of the following... urinate in the river, crap within a 100 feet of the river and not bury their waste, leave a smoldering fire or trash on the bank, attempt to pick up anything that you've lost from a canoe from a tip over (within reason), ask the horseback riders to not let their ponies poop or pee, ask Farmer John if ya see him not to let his cattle have river access, or ask an unruly jet boater to slow down because he's either eroding the bank, screwing up spawning habitat, or just making it miserable for us fisherman.
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You all get the picture... and just a disclaimer... being POLITE doesn't mean you will not be coming home without your jaw wired shut.
That's the sad reality. Feel for you guys who can't hit your favorite river during the week. I'm in a position I can and it makes a huge difference in the experience. Meaning you probably won't witness much wrong doings on the river, only the aftermath.