Wow, nice work.
Congratulations, and not just on building what looks to be a REAL Class II trail, but on working with the USFS to make it happen. This is exactly the kind of thing that can and should be going on, with the right approach and cooperation. It's a great example of what is possible. There's no reason why this can't happen a lot more, in a lot more places.
I'd be interested in any future work parties and will pass the word. Please keep us updated. By spring I may have a rig that could give that a try.
"Just because you can do something doesn't mean it's a good idea."