Theres also military and sheriff next door. However its clearly posted that Chumash is private property so you were clearly trespassing anyways.
Went over to Chumash by this route after summiting Bishop Peak. This is the best route description.
When we got to the top we were buzzed by a hawk who seemed unhappy with our being there. There may have been a nest on the cliffs below so we made a speedy retreat.
Parked at the Patricia Drive trailhead which is a bit closer.
Summited but didn't stay long due to the sound of gunshots I heard that seemed to be getting closer.