Head for Naciamento Road and take the Ridge Road to Pruitt Ridge. Awesome views! There's also a mellow 4 wheel drive section at Hollister Hills before you get to the pay station at the base of the hill. Pay first and head back towards town to the parking lot and gate. Pretty mellow 4 wheeling with restroom and picnic table at the top with great views!
That link says OHV are prohibited.
That link says OHV are prohibited.