I have caught fish that I know for a fact that I "lined" but you would never be able to tell from the hook placement. Unless the hook I down the fish's throat it is a possible lining. The regs say the fish needs to take the hook voluntarily into it's mouth but unless you watch it happen I don't know how you could be sure. I never intentionally snag fish myself but if someone does on accident and is fishing in an area with a surplus of hatchery fish and thay are not keeping over their limit then what is big huge deal I know some people have with it? It's not like they are scooping fish out of the hatchery trap or killing natives, those activities degrade the rescource.Don't go ripping my head off now, I'm just wanting hear your opinion.