That sounds like a good idea. However, I have yet to receive anything in writing from this Forest Service office. I have written numerous letters and even FOIA requests have gone ignored.
Try a FOIA request and ask for any written memorandums, letters, notes, policies, within their files concerning nudity in the national forest.
A FOIA request would ask for public documents within their file, state how these documents are important for the public to know, and demonstrate that the information will become publically [distributed to the public] known.
Ms. Ruth Wenstrom
U. S. Forest Service
1824 S. Commerce Center Drive
San Bernardino, CA 92408
(909) 884-6634 Main Office Ruth Wenstrom ext. 3130
Anyway here is the information you need to find out information on this subject.