I agree I wouldn't trust my bike to a Uhaul trailer. When we took a friend of mines X on a trailer we checked around and found a place that rented enclosed motorcycle trailers. Got one for cheaper than the UHaul would have been one way.
SO - the other option we looked into was for him to purchase a small open trailer say 6'x9' and then sell it after he was done with it. Probably wouldn't have lost as much between the purchase and resale as we would have done a rental fee.
When I got my bike I went three hours w/o the bike and three hours with the bike on the way back. I did atleast 70mps the whole way. It was fine for me. Couldn't beat the price. I think its $14.95 for the whole day. :shock:
Almost every trailer Uhaul has says max speed of 45 or 55. That never happens though. Tow it like you would tow a boat or anything, go normal speeds just don't be too harsh. Oh and uhaul trailers are terrible quality. Look for a shop that owns their own trailers. They actually keep them up.
I rented one when I got my VTX. I drove from FL to TN. Over 1200 miles total. I drove 75mph there and back. It rode Ok. Not the best. The biggest problem was I didn't notice that 2 of the tie-down hooks were not there. I had to improvise. The price was cheap enough, then again you get what you pay for. Hopefully this helps.
I rented that same trailer a couple of months ago, and had concerns myself when picking it up. I went out and bought more heavy duty straps, and strapped to the side rails as well as the hooks. Hooks looked weak in my opinion. I used 6 straps, 4 on front, and 2 on back. 2 of the straps on the front went to the hooks. I then took the bike and pushed and rocked it back and forth as hard as I could, didn't budge. I then drove 440 miles at 70 - 80 and never had a problem. The bike did get dirty though as I drove through a brief storm, and my SUV kicked up all the road junk.