Here's a tip- if you have never run a 2 stick before, don't try chunking up a stump burn pile as your first attempt!
I hired a professional operator to split and dig out stumps (fir, up to 24 inches). He rented the biggest excavator he could get, and by putting a tooth on top of the stump, and rocking back and forth while pushing down, was able to split most of the stumps. Then dug 'em out and we piled and burned them.
Before he left for the weekend, he showed me how to operate it, so I could "chunk up" the piles as they burned down. It was maddening- I would kind of get the hang of it, would just about have a pile done, then one false move and I'd knock the whole thing apart and have to start over. Took me an hour to do a 10 minute job. But look at the fun I had!
Wife went to the house, later said she was afraid I'd "accidentally" knock her down with the thing, because she was laughing so hard. I told her she was perfectly safe- I couldn't have hit her on a bet.
I now have an Allmand backhoe with 2 stick, and I'm OK at it. But that first lesson was pretty rocky. . .