Thanks BB. Never heard of those before, so thanks for the new ideas.
Here's the shortest locking pin I've found (so far)...it's 5 7/8 from end to end (left to right) guess I interchanged "long"and "wide"...but that recessed pocket on the skid is only 4 1/2" wide.
http://www.amazon.com/Master-Lock-14.../dp/B0000AXY62
The biggest problem I'm having is finding something to get through the hitch holes because it's entering at an angle....since the recessed pocket is so shallow. I'm not even sure if I could get the 3 1/4" Bolt through...
So I like the idea of the snap ring, but I've got to get some pin in there first.
The wire lock pin looked to me like it might work, if I can find one with the pin about 3", AND the wire long enough to go around the hitch tube (2 3/4" x about 2 = roughly 5.5")
Just found a cable lock for bikes/scooters, 2' x 5/8". Since it's flexible, I could get it threaded through the hitch holes, and it'd still fit within that 4 1/2" recess.....only thing is...2' is more than I need, would hang down, or I'd have to secure it with zip ties or something..
https://www.kryptonitelock.com/Produ...=1001&pid=1186
This product says it's 2.75" x .75"......really, is it that short?? Must be to lock a bike tire/rim.
https://www.kryptonitelock.com/Produ...=1001&pid=1184
So TOMORROW (I've got to get to sleep!) I'm going see if I can find some type of similar cablelock that's much short than 2'. I'll check bike and motorcycle places online. I'll bet there's a ton to select from. ALso, going to look into the wire lock pin.
This cable idea may be the best if I don't want to cut the skid plate.