Nude hiking is OK anytime on the Bowen Ranch Trail. I hike nude there almost always unless it's too cold!I believe it is also OK to hike nude on the Bradford Ridge Trail.
The Forest Service regulations specifically prohibit "Being publicly nude within one-quarter mile of the T-6 crossing (close to Arrowhead)."
I don't know exactly where the T-6 crossing is located. Maybe Rick or Wizard or others more familiar could mention where specifically the T-6 crossing is located.