Started on the pad for my new shop foundation this weekend. Had to excavate down about a foot and fill with 40 loads of select fill. My future brother-in-law offered to bring his dozer over and knock it out. I figured that would get it done in a hurry and compact it down real good. He shows up with this mini dozer. He spent over half the day and only got down about 5-6 inches. That thing can only push about a yard of loose dirt without losing traction. The ground is pretty hard and dry and he couldn't get the blade to dig in. So I hopped on the TO-35 and hooked up the 5-1/2 foot box blade to do some scarifying to break it up for him. Went a lot faster. I think I was moving more dirt than he was and I was moving at twice his speed. The second half only took about 2 hours. FYI.....don't waste your money on one of those little dozers. His is a Komatsu D21P.