that does not look very solid. In the country where I live every tow system has to be approved and they (the maker) gets a certificate about the load on the tow hook, load/weight with brake and without brake on the towed unit.
That is one of the major reasons I have not bought one yet. Thanks for posting this link. None of my previous searches had shown any of the behind-the-bumper design.
The stone age didn't end for a lack of stones. Neither will the hydrocarbon age......