I've heard over the years that the straps should be attached to the rearend because the car has it's own springs and they can work to soften the ride of the car on the trailer.

I've also heard that the trailer has it's own springs so the straps should be attached to the frame.

??

So I do it the way I want. The rear to the axlehousing tubes, and the front to the lower control arms. I've also heard that to do it this way the shocks will wear out quicker. Oh well, can't have everything.

Bend the frame? I have my doubts, but who knows? I don't. The imports from Europe and Japan have hooks on the frames of some of them.