I think signs are a good idea for the honest mistakes, when I was at a multispecies lake last yr talking to some real nice fellas, they had the trout species confused, so I helped them out; they meant well, great guys, but I think some of the big signs like in k-country showing real trout pix and ID can help
I also had a 70 yo neighbour, great guy in every respect, but with fishing, he thought he could just go down the bow, and fish, with powerbait, didn't know any different, someone told him it was fine, he got fined, as he should, but sad part is turned him off, will never fish again he said, maybe a sign would have helped, maybe not if it wasn't right where he was standing
I think signs can help the honest mistakes, but I assume most poaching isn't about the honest mistakes...there are folks who just don't care, and RAP is a great tool, but it can be tough in the backcountry where some guys poach bull trout and eat them on site; I saw a few of these makeshift "ovens" last summer with large entrails, tinfoil laying there in a crumple amongst a few jigs, discarded line, and powerbait close by;
how fast can RAP get into the backcountry if I ever came across one of these "chefs" and I'm a few km away from a road, and it is a no ATV zone?