I hate the litterbugs as much as you do.
Best thing to do is to bring a trash bag with you and pick up after them. I try to do this wherever I go, it only takes a few minutes.
If one or two responsible anglers do this every night, it would be less of an issue and would help in promoting goodwill with the neighbors.
Good thing they don't have litterbugs at Naps, the garbage bag wouldn't survive the march.
