Please allow me to caution you........
The "EXTENDED" arm that you now have with this boom is a problem. First it GREATLY increases the lift "moment" thus greatly REDUCING the weight that can be lifted.....(Try extending your arm with a phone book in your hand) AND....
More importantly, if you hook up to something heavy it will likely RAPIDLY lift the rear end (rear wheels) of your tractor...THROWING YOU FORWARD, POSSIBLY INJURING YOU........
I have chained small, 3" sapling stumps directly to my bucket (no arm or extension) raised the bucket only to almost LAUNCH myself out of the seat as the rear of my Kabota came rapidly off the ground.
Nuff said..........:confused3: