Drill a tiny hole in your hubcaps. Can't really see it unless you know it's there. Would be very easy to prove he took it. But then you're right back to the confrontation that you don't wanna have.
As for me, I think I would take mine back, along with his other 3 and place his 3 in the trail where he would find them on his way out.
If of course they were marked so you knew for sure he had taken yours.
then wait for the
and
to start
and also be scared to leave your truck parked anywhere thinking now he's gonna get even
