[Racer26]

I agree with csl, its not <G29> that prevents you from wagging your own trailer like a dogs tail, its <R18> through its requirement that your trailer hitch be mounted to a FIXED location. <G29> is what stops you from grabbing, grasping, or grappling another robots trailer, presumably with the intent to hold it in place relative to your robot so you could dump the contents of some sort of hopper into it. However, I think shoving a trailer into the wall will be similarly effective for the 2 to 3 seconds you would need to do so.