You can put a shackle in the drawbar and use that as the diedown point.
I haul a M9540 with a shackle in the drawbar with a chain passed through it and another chain through the loader arm cross tube. Never had any problems. When I was a kid my dad and grandpa hauled tractors all over the place without even a hay string holding them down and never had any trouble. At least I am doing better than that.
Thats exactly how I chain mine down. Clevis in the drawbar and I keep a 6 foot long piece of quarter round trim in back of the truck to push the chain thru the cross tube on the loader.
After reading most of these threads I'm going to try and find a way to chain down the front of the tractor and strap the bucket.
Because most of the CUT's are sold with a FEL we forget, at least I do, that the FEL is an implement.
G70 5/16 chains, hooks, and rachet binders.