by wincrasher » Tue Apr 15, 2014 10:23 am
You were very lucky as others have pointed out.
I've had a couple occasions where when I got to my destination, I found that I forgot the security pin on the coupler, and it had popped up. So the tongue weight was all that was holding it to the ball. Now I make the habit of always returning the pin to the holes, whether up or down, and not just setting the pin on the tongue, the ground or whatever.
I am curious though, did you not have a lot of "noise" during your trip. Like clunking, screeching, etc. I'd suspect if your chains were all that were holding it in, you'd have had a lot of bumping and banging.