Wish i had a pic but in my 88 we filled it full of dirt till it was flowing over the sides, hit the helper springs and just kept filling it, damn thing would drive straight for nothing. Did the same thing with my 96 f150, theres still a small chunk of pavement missing from coming off the railroad tracks from where my trailer hitch was dragging.
It was only 15 miles though
But the best i remember was towing a 60s model International school bus that was converted into a camper andw ent through a flood, we where told if we could get it out we could have. pulled it out a river bank with a 78 F350 wrecker and a 84 chevy 3500 wrecker. put it on the f350 to bring it home and with the extra weight from the camper conversion and 3inches of mud on the floor we would pick the front tires on the wrecker when we took off or hit a bump. when we got to the turn off for my road which was a 90* turn down hill, i had to get out of the chevy and me my 2brothers and my mom had to sit on the front to keep the tires on the ground to make the turn. Thats how you properly overload something, of course dad had hauled complete mobile home with that truck before