A problem with the bike hauler as shown here -- and the ones that I built from scratch, which are damn near identical to these -- is the the tie-downs, being fixed to the vehicle (whether to bumper or to the outriggers on the hauler per se -- is that when the driver of the tow vehicle turns, the bike rear tire swings to the inside of the turns -- and since there's a steering head angle involved, there is a large force placed on the outside-of-the-turn tie down trying to pull the bike back to upright. Result: The clip-on gets warped into submission, or the tie-down fails and the bike falls over. Want something even worse to happen? Walk away for a moment, and have someone decide that your rig is in the wrong place, decide he should move it, and therefore backs it up. Big damage when the turning stresses are applied! El Mirage November '04, I think it was, when we learned this lesson.
We suffered this more than once, and that's why we went to the trailer-ette where the bike is secured only to the trailer. Go ahead and use a hauler like the one shown -- but beware of me coming up to you, seeing your bent bike, and saying "I told you so!".