700 miles on Collins tow dollies! Will they blow up?!?

I got called to tow a GMC Yukon Denali from Bend Oregon to Pocatello Idaho. I loaded it up on the tow truck with my Collins High Speed Dollies under the back of it and headed east through the high desert of Oregon and into the plains of Idaho. Since I have a serious hatred of motels, I turned it into an impromptu overland trip and camped on the ground in a cow field.