If you just haul a short distance= less than 10 miles, you shouldn't have any problems. If you remove the chain you could haul it across country but be aware that those miles won't show on the speedo but will wear on your back tire and wheel bearings..
I hauled a RD305 Big Bear in the same manner from Key West to NM AND back!!! in 1970. Found out real quick "DON'T BACK UP" and compress/strap the forks down as tight as possible!!!
I welded together a "U" channel bracket from 2" angle, I drilled a 3/4" hole in the base to attach where trailer ball would be and approx. a 1/2"(17mm) hole on vertical legs, removed front wheel and attached M/C with axle to hitch with axle through 17mm holes.
Xnavylfr(CHUCK)