My first trip to Coe kicking off my Year of re-Entry to MTBing as an old guy, messing around on Pine Ridge (Friday). I did the Flat Frog Trail, I can see why single track can be addicting. Those 45 degree turns on stones above a 100 foot fall into gullies, that adds a certain drama to it - and I sole footed more than a few of those. Wish there was more legal single track in the Bay Area proper, EBRP system seems to have issues with MTBers on anything but fire roads.
Anyway, seems like you could spend an entire season exploring Coe..but looks like it would be brutally hot on summer day.