I don't know about leader length but you can go to any Washington state river in the fall and see more snagging that legit fishing.

we need more enforcment with officers having more ability to issue citations based on what we all know to be true through experience not based on what they can prove in court to a judge who knows nothing about fish or snaggers. Thier word in court should be the same as an expert pathologist in a homocide trial.. Mostly though we just need more fish anf game officers willing to do their jobs. Not just driving around looking for yellow stickers on windshields.