Cannot recommend for heavy motorcycles. I read the instructions, watched all the videos, read the instructions again. Did multiple test rides in my local area before long trip, and struggled with the bike rocking left-right. I know the handlebar straps have to be tight, and the wheel clamps very tight against the tires (which were sized for my specific tires). I ended up using redundant straps, because any slight loss of tension = violent shaking. I added grip friction tape to the wheel chock due to wild rocking at freeway speeds if hit bump. Helped a little.
I purchased the optional hitch stabilizer from Motow and everything was tight.
The bike was stable if the road was smooth - but still rocked badly with uneven freeway roads.
Before my 900 mile round trip I drained all the gas out of my tank to achieve 472 lb dry weight to see if that would help.
During my journey there were 5 episodes of severe rocking that caused me to pull over, take out any slack that may have developed in my 4 straps to the bars, loosen the wheel clamps - straighten the bike back up, then tighten as much as physically possible (pushing into the tire at sides per instructions). I was searching for used trailers before returning home, that is how concerned I was. But I did make it back home in one piece.
I will re-home this to someone with a very light dirt bike, or KTM 390 like in the videos and I am sure it will do OK.