No matter what you do a professional will get it if the market is hot for your model.
Torches, battery grinders and 'tilt n loads' make that easy.
The druggy or joy rider is a different story.
Disabling a critical circuit will accomplish that goal, be it a safety switch, pulling a rotor on a gas tractor etc etc.
On mine I simply short out a safety circuit that really is not obvious.
You could pull all 4 wheels and with a tilt and load they still can take it.
CYA for the 'joy rider' and carry good insurance for the 'pro's'