Have you thought about installing a little solar setup to provide power and keep batteries topped off? Perhaps run some lights on and off at irregular rates to give some illusion that someone is there?

A nice deep hole in the middle of the main roadway would be fun. Use a temporary bridge for you to cross, remove and replace with some crap lumber when away. Keep the truck for yourself when you find it in the hole.

Better yet, a moat. Goes well with a pond owner, right? Just kidding, but I AM glad your wife won the fight.