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

I think the only safe - or semi safe way to have bikes on the back of a trailer is with a frame mounted hitch. However, the bike rack also has to be a solid (non articulating) kind of bike rack. I think the bike racks designed for the back of an SUV with a hinge will break after bouncing on the back of any trailer. I have a Yakima rack that is designed for trailers and have a very solid reinforced elbow to prevent that hinge from being the week spot.