The U-Haul tow dolly will come with surge brakes. If you do not get a pull through site there will be NO BACKING UP into the site. It is almost impossible. First there is too many pivot points. It will be like trying to push a wet noodle up hill and keeping it strait. Then consider the surge brakes. When you start to back up it will push against the tongue of the dolly causing the surge brakes to apply. I have a Stehl tow dolly with surge brakes. I have plenty of experience backing trailers and I'm here to tell you that backing a tow dolly is almost impossible. :h