Originally Posted by Duragrouch

I think most child trailer hookups are not any stronger. But with hills, I would not want it coming loose. Simple solution: Just like with vehicle trailers with safety chains, rig a backup out of thin plastic covered stainless steel cable with a clip, just snug enough so that if the standard hookup comes loose, the trailer hitch end stays attached but doesn't go into the rear spokes.

I should get paid for advice this good.