We have one similar to this one.
AMPLOCK U-LPCVR | Heavy Duty Conical Lock for Fifth Wheel | Patented 1-Cylinder Kingpin Lock for 5th Wheel Travel Trailer | Prevent Traction with Chain
https://a.co/d/9d8mc7J
You can disable your hydraulic system by removing the inline red 5A fuse above the hydraulic pump in the corner.
This fuse goes to the Level-up control panel (and your tank heaters, ask me how I know, lol).
If they can't move your slides or jacks, your rig isn't going anywhere.
We also have a Tracki (tracking device) hidden on board.