People around here only mark their lines with tape or whatever so they can remember where they are at. I've never saw anything marked with a tag as the rules book states nor ever heard of someone getting a ticket for not marking. For the most part you dont see many old lines left by fishermen either though. You'll see one occasionally but not very often. Alot of people fish limblines for those 100 lb cats but not many at all run the trot lines. People dont have to worry about me leaving my lines as I have alot invested in each one and usually get 8-10 yrs of use out of the lines/hooks/weights.