I have been asking my friends in Al Ain what they think about the fort photo posted by brakedwell. They belong to a local group who go into the desert every weekend (I used to join them, and shall be with them in a couple of weeks again) and are very knowledgable about local forts.
So far, one says probably not Buraimi, another says yes, probably Buraimi.
There was even a suggestion it was Mezyed, a few km south of Dau'di.
Both say it is not Jahili. But from the photos that brakedwell linked to on Flickr it does indeed look like it!
It just shows how difficult it is to identify these forts: they all look rather similar, as I said earlier.
From brakedwell's description of the site of his airfield, I still opt for an unrestored version of Buraimi.
I shall try to study the question closer when I get over there.
Laurence