My very own 'broken bumper' story...why didn't I listen?

I had my bike rack mounted to the bumper with a clamp on receiver. However I also used a set bolt to take out the play in the Exocet opening, and also had it ratchet strapped to the rear wall with angle steel behind the bunks for support. In 13 years and many thousands of miles the rack never bounced or swayed. I had a rear view camera that I could keep an eye on them. I wouldn’t do it unless the rack was tight with the trailer and properly supported!