We anchored in a NNE3/4, but even then there was a little bit of swell. As I recall, the bay is not mentioned in the Clyde Cruising Club's Sailing Directions and I'd guess that it's exposure to the Atlantic would be the reason. Haswell-Smith describes it as an "occasional" anchorage and potentially dangerous in Westerlies.
According to Martin Martin's account, c1695, "Kilouran is the principal church in this isle, and the village in which this church is, hath its name from it. There are two ruinous chapels in the south side of this isle. There were two stone chests found lately in Kilouran sands, which were composed of five stones each, and had human bones in them".
More recently, Hamish Haswell-Smith writes of Neolithic, pre-Christian, early Christian and Viking finds in the area.
If you look closely at the photograph below, you should see the mast of a yacht beyond the blue boat in the foreground. This larger yacht was at anchor in Port Sgibinis; bounded by rocks on both sides, it looks like a tight fit with limited swinging space.


- http://webapp.navionics.com/