"Some operators like to cross the rear tie downs. This is acceptable but you must use caution. Make sure that the attachment point you use on the vehicle will not be able to slide towards the center of the vehicle. For example, if you use J-hooks attached to a rear axle housing and you cross your chains, the J-hook may be able to slide towards the center and cause your tie downs to loosen. I prefer not to cross my tie downs. If you have your tie-downs crossed and one side breaks or becomes disconnected, the other side may tend to pull the vehicle to that side of the deck. If the tie downs are straight to the rear of the deck and one side breaks or becomes disconnected, the other tie down still pulls straight back and not to the opposite side."
It doesn't say not to, it's just what he likes to do. I don't see a vehicle, espically the weight of an EB, sliding sideways on a wooden deck trailer. The front axle is easy to strap, the rear axle I now hook my axle straps on the outsides of my spring perches - nothing can slide side to side.
