Consider that the "is it legal?" thing likely involves many laws. A lawyer would have to be involved to really answer the question in any state or province. It also is just the start. Does your insurance cover people in the trailer? Does the other guy's insurance cover people in the trailer? How about product liability coverage? It just gets more complicated the deeper you dig.
As Nike says "just Do It" and get back to us with the results to include any bruises or cuts sustained. Oh an be sure to do it where there are potholes so you get the real effect of being pulled in the AS.
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