I admire all you are able to do with just hand power tools. I would be totally exhausted, and unable to make sufficient progress to keep up.
Much of what I'm doing currently is creating "new" trails, and that's a bunch different vs maintaining existing trails. I'd be interested in comparing techniques, understanding there will be differences since I'm more mechanized, but we might learn from each other.
Most of my trails are old logging roads and skid trails. Some are 50-100 years old, and others 10-20 years old. And all have grown over in to widely varying degrees.
This first challenge is locating the trail. Sometimes it's easy and obvious, but a lot of times they are pretty hard to see because of how much they have grown over. Logging trails also generally fan out from a log landing, all dead ending near a property line or the edge of the area that was logged. That leaves trails that can get you lots of places, but dead ends aren't very interesting, so a big challenge I find is deciding which trails to use, and how to connect them in a useful and interesting way.
The first step I take is to map out at least the major trails until I have access to most parts of the lot. I'll only spend as much time as required to get them mapped, and do minimal clearing. All too often I'll reach a dead end, or discover a better trail to get to a particular area, so by doing as quick a survey as possible I can focus the more time consuming work of clearing on the trails that I actually want to use. I'll also often start with a vision for how I want the trails to run, only to change that as I discover what's already in place. Maybe I'm trying to make a loop, or create a trail to the summit of a hill top. Or connect a trail on one parcel through to a trail on another parcel.
When I map the trails I will typically use both a GPS track, and flagging to mark the trail. I find that once you are in the excavator clearing stuff, it's easy to lose track of which way the trail goes and find yourself pushing off in the wrong direction. The flagging makes it a lot easier to follow since otherwise you have to keep stopping and hiking around to re-find the trail. With just the GPS track you can get too far off before you know it.
The hardest trails to create are completely new one, so I try to keep that to a minimum. But when there are adjacent parcels, each with logging trails up to their boundaries, their ends will be close, but not connected. Tying them together to create a loop or trail that actually goes somewhere requires creating a new connector segment. That usually means removing larger trees, and dirt work to level and grade. I try to minimize both, but there is always some amount required.
More to follow in another post...