I bought a Ford LGT145 on Saturday. It came with a 48" scraper blade on a Brinley hitch in the rear. The original owner modified the blade with 2 blocks of wood and an angle iron with cultivator teeth. I thought that he was very clever with the hinge system. He was a Pratt & Whitney engineer many years ago and an Air Force vet of Korea.
He used a small chain to hold the teeth out of the way when not needed. He had about 100# of big chain wound around the top to help it dig in(I removed the chain because it was too heavy, for my back, even without it).
I hope this may give some ideas to others that want to build something. I'll probably take this apart and just use it as a scraper. I have an earthcavator and a shoveldozer for really moving soil.
BTW for guys who have not experienced it, seat time on a sixty year old shoveldozer is a trip but very painful after a couple of hours. Good Luck, Rick