I never really thought about putting a lock on our fifth wheel until this year when I started seeing a lot of stories about stolen RV's. How long have you been locking your king pin?
Have never had a pin lock. I did wire a hidden kill switch into my hydraulic levelers though. Agree with others that risk of someone taking 5er is very low, even lower when not in storage. With that said, if someone wanted to steal my particular 5er it would be much more difficult to deal with landing gear that couldn’t be raised than it would be to cut off a lock.