Ditto here. My experience with a BX2660 showed me that the Kubota Ballast Box did not require all that much counter balance to move rocks bigger than the FEL as well as full loads of gravel. Filling it up with heavy junk allowed me to remove the junk and move the BB around to wherever I decided to park it. My box has 5 years of usage in this manner and I am happy with the result.Let's see. I've got cement blocks, a couple of belgium blocks, 4 old disk drake rotors, a weight from the bottom of a floor lamp, and a few assorted broken bricks. It sure ain't pretty but it works.