The car is low already as you know. I will ratchet the front beam down forward and out to left and right. The rear frame of this 90's IM has a bit of a box frame on each side to hold the front hinge points of the trailing arm suspension arms. A local welder welded on a thick tab on there on each side with a 1" hole through it to attach a ratchet strap.
So to answer your question Ray, I'll be ratcheting the frame down towards the bed of the trailer which would be the opposite approach to putting basket straps around the tires and ratcheting them down to the trailer. I've been made aware that some ratchet the frame of the car right down to blocks which essentially makes the car frame blocked right down against the trailer. I'm not going that far. Steel angles that I will install on the trailer deck will prevent the car moving from side to side and I will install one set of wheel chocks up front to put the car in the same balance point every time.
Apparently there are conflicting opinions from many sources to crisscross the ratchet straps or not. There is provision now to do it either way. I'll collect one more round of opinions tomorrow as I get the rig weighed and then move on.