I'll add this to thread, a recent towing experience that could have been better. I have a military surplus pintle hitch and chain plate on 80 that is used to tow a M416. A few weeks back I was towing the M416 and had failed to close the pintle on the lunette but I had hooked the safety chains. I had driven about 10 miles on county roads when I was crossing a bridge that had a rough patch on both ends causing the trailer to bounce. Lunette came loose but the chains held. Kind of a wild ride seeing a the trailer bouncing around behind the 80. Once stopped I reattahed the trailer and made sure the pintle was closed. Today I noticed that the left ear in the photo had been bent during the loose trailer time.