Jim,
it is troot like that (we have caught bigger) that draw me and the boys back to the limestone lochs year after year. We have North Uist and Assynt both of which are special in their own way but the quality of troot in the limestone lochs are amazing. Sometimes you would swear that they are empty but every now and again they give us a brief glimpse of what they can produce and it is magic.
Feel free to join in sometime if you want.
Eddie.