The locking pin I had was easy to snap off with a single hammer blow. So when I replaced it, I just went with a normal one.
I leave mine in because I don't like it flopping around inside the truck, and I use it too often to not carry it.
Yes I've hit it my self a few times. But I always blame myself for not looking. Lol.
Wasn't a square, and no other car involved, but I had one that blew my mind.
I had a 2005 Silverado crew cab for a while.
Me and my buddy went out booze cruising the country roads in the snow like dumb azzes. Sliding around and such. I came around one corner doing all right, and the way the snow was plowed it looked like the road was 2' wider than it was. Dropped the rears off the edge and it was sinking quick.
So I figured were either getting stuck half way across the road on the back side of a corner, or I'll give it a good old go for broke high school try.
I turned into the ditch, smashed the skinny pedal and held on. We went down about 10'-12', through a barbed wire fence, bounced up into a pasture and drove around and out to the road again.
I figured I destroyed the paint and such with the barbed wire. Didn't even want to look at it when I dropped him off.
Next day I went out, and couldn't find a mark

.
Everyone that knew about it was shocked.
About 2 months later I noticed a small 1"-2" scratch on the driver's side fender where the fender, bumper, and headlight area all meet. And a small bit of ruff on the plastic there. Fence went In that crack, snapped, and flew free without touching the sides apparently.
Going back and looking at that ditch with no snow I'm amazed we didnt break a bunch of chit lol.