Those look something like what I had in mind. Is there a way to lock them in place so that you would need a key or combination to remove them? If not, I think that I could modify them for that purpose.
I also have the X-chock. They work great. BAL the makers of X-chock also make a padlock with the right size shackle for the chocks. We sometimes purchase seasonal sights and this just gives a sense of security. We own 2 chocks.
We use the ratcheting type without the lock. They work fine. Besides, if someone wants to steal the trailer, all they have to do is deflate the tires and pop it off. You can't stop a determined thief. We do use a coupler lock when we leave it for more than a few days.
Luckily we can park in our driveway during the off season.