Years ago, I saw one of these trucks with dried out several year old vegetation hanging from the undercarrriage. I'm sure he would never clean it so people think he drives off road, which he apparently did once in the distant past.
I've been tempted to use a camera flash aimed properly out the back window against these hooligans with the blinder lights. 1 or 2 flashes should convince them to call a truce (or perhaps pull out their gun and start shooting but blinded so their aim will be bad)
I would love to see it required that when on public roads, headlights and bumpers must be lowered to match automobiles since the mismatch puts standard automobiles at grave risk. Off road, do whatever you want.