Richard, Tom had a possible explanation posted somewhere, possibly in the Nguyen/Orbeso thread or many pages back in this thread. It involved RF engineering. I think it was comparing the signal strengths of all 3 of the 120-degree segments of a tower.
Myth, I agree that he could have traveled far. I've seen people hiking with little or no water when it's 90 degrees. These are not Skyline hikes but 1,000-foot climbs and maybe 4-5 miles round trip. Apparently they made it because I never heard of a rescue after I saw them, but it's possible they developed health problems as a result. Bill may have carried more than 2 water bottles if he filled up a hydration pack or re-usable bottles at his condo.
Since I don't have tracks for the Ewasko helicopter searches, I added that map as a new layer:
https://caltopo.com/m/3LDMThe key is in the lower left of the new rectangle image.
There was some aerial searching in the hills NE of Johnny Lang Canyon and also the north side of Quail. However, the helicopter searches (not including the search for his car) didn't start until June 30, and he was missing June 24. So that was likely too late for him to still be alive and too early for wide scattering of evidence. But if he was out in the open, he would have been seen in those places. I noticed some foot searches that I don't have as GPS tracks. They went down 2 drainages on the north side of Quail. Orange solid lines.
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