Fremontguy,
If you ever do ride the Kirkwood area trails, do it with someone who knows the area very very well. The trails are not well marked. I didn't look for any trail maps yesterday, even with a map it would be very easy to get lost.
The trails have a tendency to go from dirt to solid granite. On our way back I lost sight of the rider in front of me, and had no clue of which way to go. If it wasn't for Dave babysitting me (came back) I'd still be out there. I would be a Donner Party of one. Let's see what would I cut off first? I'd do a lobotomy first, heck I don't fully use that part of my body anyway:p
It was dusty, the rain didn't help. We would use the 30 second rule. Follow 30 seconds behind.