It's something I never wondered about until I now have to do it.
I have a 6x4ft box-trailer I borrowed off a friend. I fitted a new checker-plate floor and shs tubing to replace the rusted-out originals. I also fitted a jockey wheel and made a spare tire mount all as a thank you. (Yes.. I'm also going to paint it for him!)
Anyway, I figured I'd chain down the warm-up-cradle I made using well.. chain, and turnbuckles to tighten it down. I fastened eye-nuts to the floor to hook the chain onto as well.
It's real secure and beats sitting it in an old tire with a piece of rope!
So, how do you guys "normally" do it?
I figure some of you guys do something like this all the time.