Fwiw I'll post some instructions from my (unused) notes from the time. I don't think it's as many as 5 fields down....
I'll tryta post 'em tomorrow Goff, if I haven't done by Friday, drop me an email. I'd strongly reccomend having the Explorer AND the Iain Cooke book, as it's not really clear from either of them, but with them and my notes, I think you may have a chance!!! The worst thing is that it's difficult to spot even when y're in sight of it, as Oci sez, it just looks like fieldwall 'til yer on top of it.
Oh, and as MR H has hinted, the quoit isn't THAT easy, but it seems it after looking for the hut!!! (It's in a maze of fieldwalls, but the Explorer shows it pretty well really!)
love
Moth