I'm sure you guys up north have the same as us in the south. They have a day that is picked out for groups that use trials or rivers and have a clean up day where they walk along the trial as a group picking up trash or what ever needs to be done. For the river they bring their rafts and paddle down collecting the trash. It seems to work out pretty good. We can't stop the butt heads but if others are willing to help take care of the places they tend to not close them down.