Lets say you had an implement that needed transport via detach low bed. Said implement, instead of disassembly might be transportable whole "IF" one could build a crib of sorts to raise the implement's transport wheels about 3' up off the trailer floor. Then one could lower the implements working parts that are on a lengthwise rockshaft, and get the width down to legal with one flag car. Implement weighs about 7 ton and is on 4 tires at the rear of the implement. This way the crib would be at the gooseneck's backside.

 How would you design the crib? Or,..would you pay a local fab shop to build a stand with metal? It would be a one time transport is why I was thinking of using wood 6x6s etc.