Howaiian is right in the fact, that there is no way in proving that a fish voluntarly took you lure. This is an area once again, where our laws, make no sense, as spinnerman pointed out the rule that any fish caught in the eye, or gills should be kept. What conflicting rules! You, that think that there is no difference between drifting your bait in a fishes mouth, and using a 3 ounce weight, a treble and ripping chunks of flesh are crazy! What we are talking about is an issue of ETHICS. There will never be a way to stop all snagging, but what can be done is get rid of trebles, and maybe even have weight restrictions on certain streams. just my two cents. Oh and I have seen Salmon go up and hit baits with there tail on occaison, not that it means any thing.