If he asks to fish again, which he implied that he would like to do, I will just have to talk with him and see what I can get accomplished. Back when this place was a campground, I saw all manner of inconsistencies, bad habits, sub-par gear, and poor fishing practices. It's been so long since I had to deal with that however, I guess I had just forgotten that this type of thing was prone to happen.
I need to give it some thought, and come up with some rules or ideas to help prevent future such occurrences.