So, martin sucks since he is letting this die. I guess it's too much trouble for him to snap a pic of some cool tool that one of the foreigners in his neighborhood uses. About 2" square.
Yep, receiver hitch. I think the trip wire is just a piece of fishing line that found it's way in there. I usually have a couple of rods/reels in there. You never know when you might need one. Watcha got?