On Saturday, September 17, 2016 at 9:59:21 AM UTC-4, wrote:
I have the same type of cylinder lock without a key attached to my receiver. I think the lock is titanium so cutting will not likely work. I'm going to try the big hammer method and hope the lock pins inside the lock break.
For those wondering why we use such a heavy duty lock. I moved halfway across the Country towing a trailer with all of my worldly possessions. I still have all the stuff so I'll assume it worked.

Why do you assume that the lock worked? How do you know that your trailer would have been
stolen if you didn't have a "heavy duty lock" or any lock at all for that matter?

Do you see evidence of tampering?