Can I add my 2 cents form an old logger's standpoint? There is nothing more efficient than taking stems out of the woods. Whether you have a forwarder, skidder or small tractor, dragging and piling as large a log/s a your machine can handle is the most efficient way bar none.
To those who find it a pain to cut stems after skidding, what do you think the crew forman would say to you if you complained about this? I know what I used to say when I became one. There are several ways to get around this: carry a small axe at blocking time and chunk off the dirty area. Since you only have to be concerned with a 1/4 inch width of cut, clear accordingly. 2. Got a hose near by? If not use, solution no.1. 3. Who gives a rats tail what dirt does to a chain (not to be an ah here but as logger, one had no choice). Get more chains, more saws and as described above, semi chisel is best for economical cutting. Days that I was on the cutting team, I'd have at least 5 chains and 2 to 3 saws with me. When the skidder started its turn, I'd put up the new chain or sharpen the one I had on there. 4. As described, skid in the winter. 5. Be sure to pick up at least one end of the log when skidding. Forget using the draw bar to skid wood. Get a winch, or a 3 point gismo to be elevate one end of the log/s. They stay 90% clean and with minimal environmental impact using this method.
As far as blocking, holding a log up as Rusty described is a more than viable way to cut up stems. Not too many of us can substantiate a processor either on a cost or production basis. My processor is my tractor which holds the logs and then pushes the logs toward the splitter. Sawyer Rob has his way he is happy with. I never touch two hands to a block. It is either log hooked or pickarooned in place. Get one or both of these and increase your production immensely. Any or all of these solutions will make cutting up firewood more enjoyable. It takes me a total of 12 days to drag out, pile, cut up and stack 5-6 cords I need for the burning season. I drag out my stems the season before I cut them up and it only takes about 3 or 4 days to skid out all the wood I need. I enjoy every minute and it's all over too soon.