He probably bought it from
Copart and Florida is the worst about making a vehicle "destruct" while the same amount of damage in GA, TN, NC, AL, & KY will only have a salvage title. You cannot get a tag for a CD or a salvage title vehicle (except KY as posted above). Other than KY you have to have a salvage title (Not Destruct) vehicle fixed and inspected and then you get a "Rebuilt Title" which then lets you get a tag.
He's been able to use it by putting a tag from another trailer on it. As long as he does not have an accident he'll probably get away with this.
PS, I've thought about buying a destruct trailer, BUT only use it for a hunting camp where once you get it there, who cares. My daily driver is a Copart hail PU that I did nothing to other than paying the $118 to have it inspected so I could get a "Rebuilt" title and a tag. If I put a new hood on, it would look pretty good as the rest of the metal is thicker (fewer dimples) than the hood. If you do not wash it you do not see the dings.:B