The current default Network Analysis function works great for me when I 4x4, and for Krein when he mountain bikes on long trails.
I like to map out every little trail, and sometimes get off my bike to hike. The default settings (based off Krein's usage where I'm assuming you take long rides and few short paths) doesn't work for me in this situation. It turns short hikes into stubs, and combines things that are parallel trails.
For example:
Me in Tucson Mtn Park on bike and foot:
- Reduction strength: 29
- Construction strength: 11
Me when I 4x4: (defaults--also works for long bike rides)
- Reduction strength: 76
- Construction strength: 45
Let us have a pulldown saving several sets of usage. I sent you my Tucson Mtn Park GPX already; it's only getting more crowded as I explore the smaller trails.
Note: I stay off any trails that are marked off, and if you see me wander onto one of the closed trails, please let me know as I'm going to put this GPX on the web later.