OK, folks, here it is, real quick. My van is rated (according to the door sticker) at 8600 GVWR. It doesn't take very much of a trailer to put me up and over 10,000 CGVWR. My old boat trailer wouldn't do it, but it was a real lightweight. Almost any cargo trailer now on the market would put me over. About that guy with the van pulling a trailer: I understand from elsewhere he was already having troubles, and now he goes into the mountain country of North Carolina towing heavy. He had to overheat, there was no getting around it. That's when I quit watching. One of my friends who did watch the show told me later how this came out.
Secondary note, from a post above this one: I'm under 10,000, so I don't have to log. But, no way in hades am I going to drive three days straight pulling fifteen hours a day. That's asking for trouble, and you don't need DOT to explain that to you. Tinkerbell can probably explain it well enough while she gives you directions after your second fifteen-hour driving day. Or maybe halfway through it, depending on how your luck holds out. (For those who need it explained: After pulling that many hours, you begin seeing things that aren't there, and maybe not seeing things that are there. The risk isn't worth it.)