Sorry, maybe I didn't make this clear.
I started by ruling out anywhere on the Parph (Capeside) and anywhere on the West Moine (west of Eriboll). That still left a fairly large area.
Next I looked at the village records to see from the number of births whether this was likely to be a large or a small township, and concluded it was likely to be one of the larger ones. Based upon that, I therefore ruled out Bagh Uamh Dhadhaidh as too small to have had a community with this number of births and marriages.
Thirdly, I looked to see if the term "Smoo", now used for the cave, appears as a township name. It doesn't.
Having been there last week it is clear that the area around the cave was occupied and cultivated over 200 years ago, and remains populated to the present day.
My conclusion was therefore that the area uphill of Smoo was a more plausible situation for this township. Finally, I looked at the marriage records. These disclose that the community had its own weaver (Richard MacKay, married 29th March 1798) and that most marriages were to persons living in the more central townships (Balnakeil,Cnockbreac, Balvoolich). That's not wholly conclusive, as Richard's wife was from Achiemore on the Capeside, but my conclusion remains that the most plausible site for this settlement is in the vicinity of Smoo Cave