Last summer I bought a Ferguson TO 30 tractor with a backhoe that appears to be original equipment (1952). To look at the tractor it's difficult not to laugh at the rust and paint, but the rubber is great and the owner did rebuild the engine and it runs great. My intent was to dig a few fencerow trees and quit when the backhoe broke, then convert it to a regular tractor. I've already dug more than I dreamed possible. I've dug some elm, mulberry and apple in the 12-18" range with pretty good success. Right now I'm looking at a cottonwood that is slightly larger. What type of root structure does a cottonwood have? I usually dig around the stump and cut the lateral roots with my junky chains.