Oh yeah, I saw a guy with a fly rod fo the same thing on the Miami during the chum run. He was using a weighted fly under a bober and ripping it out. At least he was putting them back, but still. Snaggers be damned!Snaggers....
When I fished the deep hole at the top of the estuary on the Chetco, there were about 20 or so little fly fishing punts anchored around the hole that is about 100' x 100' and about 25' deep. Guys were all shooting sinking fly lines. So many lines in the water... must have been hard for the salmon to swim w/o getting a line in their mouths. Many fish were legally caught, but I'd see a guy lift a fish and turn away from the highway... you just know he was hiding a foul hook, and then put the fish in the boat anyway.
Same thing here on the Wallowa but from the bank, not punts. These guys would gang up in one spot and flog the water with 9' leaders and a fly that is almost a bare hook. I watched and saw how they ripped the line back each time.
Very disheartening. Some say this is a myth, but I've witnessed it. Not all fly fishers but certainly some...