John Mc, I had been planning to fill the rear tires with antifreeze for awhile and I finally got around to this morning. It helped with the traction alot. With the winch mounted on the back traction is not an issue and most of the time when I will be using the log arch the winch will be on the tractor. After loading the tires I welded some short pieces of chain (anchor points) toward the front of the boom which also helped. I'm now satisfied with the arch and after painting the new welds I'll call it done.