For the folks that are worried about them being stolen why don't you use a locking pin. I use one every time I put my stinger on my rig.
The ones that I don't like are the ones who back their rigs in and then they back over the sidewalk and now it is in the way for anybody that is walking on the sidewalk were they are supposed to be and with trucks when they back up till their rear wheels hit the curb or bumper on the ground have almost taken up the entire sidewalk. Those are the ones that make me mad.
Now the real good one is one time I went to an RV show and there was a full size dually truck parked in the parking lot and he had a 4' extended hitch, yeah I said 4' not 4, on the back of the truck and he was parked in a normal parking spot. He probably hauled a slide in trick camper and took it off and didn't bother remove the hitch and just came to the RV show and parked it. Now that one was really stupid.