FWIW, I skid all of my firewood out of the woods as logs (normally 30' to 45') where I use a log arch and winch to load them on my trailer. I cut mostly dead standing hickories, and they are normally in the 14" to 20" range. I do this because I need the tractor (27 hp 1983 Ford 1710) back at the house (45 miles away) to unload the trailer once I get it home. Whenever possible, I skid logs out with my truck (4wd F350). I do have my tractor in the woods a few times a year to bush hog the lanes and do other work, and I do skid logs with it when I need to, but the truck is a LOT faster, and its drivetrain can take a lot more abuse. Even when I have the tractor out, I use the truck as much as possible. I will normally skid 2 to 4 logs out at a time with the truck. With the tractor, I'm limited to one, or maybe 2 at a time depending on the size and length. The deciding factor on truck vs tractor is usually either the location of the tree and/or the ground conditions. I can get the tractor into smaller spaces and it can deal with softer ground conditions. Once I get the logs out to a landing area, I cut them to 15' as I load them on the trailer.