Paddocks? Are you guys talking about a residential type padlock like you would lock up a storage unit????
I would NEVER even think of using any type of cotter pin with or without some sort of hoky locking clip or a padlock to secure a full size car towing.
Those are the first things I threw out and bought a 'set' of three locking hitch pins keyed the same.
2 go on the toad and the other one goes on the hitch to the tow bar.
You may not have even lost that cotter pin. There are NUMEROUS reports of RV'ers having kids and idiots pulling a pin out while the RV and toad where parked in a restaurant parking lot. AND reports of stolen tow bars off the back of RV's when parked and the toad not connected.
IMHO those of you who continue to use the cotter pins I would be checking each and every time you park that they are still in place. Just saying.
