From personal experience, it went into somebody's front yard, the right front corner hit a oak tree that was at least 3 feet in diameter. 4 feet of 6 in channel ended up sticking out of the other side of the tree, after hitting it pretty much dead on. A local guy with a huge IH 4wd couldn't pull it out. He cut it off on each side. It had been the side frame of the trailer. I paid the homeowner $150 for damages. I was very, very, lucky. I was doing 55 on a 2 lane when it let go. If it had hit a car or a person, I'd have had that on my conscience forever. I had the trailer repaired, it cost about $500. This was about 12 years ago. I had used that trailer for about 10 years, without safety chains, reasoning that all I ever did was short hauls in the neighborhood, usually hay. I had rented a trencher a couple of weeks earlier, it needed a 2 in ball. I forgot to change it back, the trailer used a 2 & 5/16 ball. All in all, it was a cheap lesson. It could have been a whole lot worse
Btw, the darn tree is still standing. It is less than 20 feet from the house.