How do you have the top plate secured to the base unit with the cable? I've had mine for almost 14 years and have never worried about having the hitch stolen, but mine is also the post through the floor, and tightend dowm, our bases are different. Haven't found a good way to do it (but I haven't looked real hard either). Maybe a padlock where the locking bar pin goes with the cable through the lock. I'll ponder on it a little longer.