Hi wa8yxm,
The locks have a hardened steel rod that is loose inside the center of the pin. When you try to use a cut off wheel the rod just spins. I think it is too tough for a bolt cutter as well. That leaves a torch as the only solution for the lock part.
https://www.wayfair.ca/Master-Lock-Armorlock-Padlock-37D-L3333-K~YG2605.html?refid=GX77818329407-YG2605&device=c&ptid=74402319076&targetid=pla-74402319076
My new generator clam shell rack will have two of them, and dual receiver locks with the same technology.
Of course it only slows down a determined thief, but it may be noisy and time consuming. They can move on to the next RV instead.
