I recommend adding a set of nice loudspeakers to your equipment list. When people like that show up, start playing long loud bursts of fog-horns, and when they ask you why, tell them you are call blasting for the Loch Ness Monster.
When they tell you Nessie isn't in that campground, tell them before they showed up you were playing loud long bursts of flatulence and sure enough, a bunch of butt-holes showed up...
Delta Zu, I have been pondering "PSI" intelligence in Sasquatch for years. The opportunity for an excellent field test has surfaced. The alleged shooter goes camping in the area of the alleged shooting incident. The alleged shooter will not need much food or water and should leave a DNA sample with one of the DNA experts who post on the BFF.