Jay
In a water that contains fry then Yes.
problem is up here few trout waters have large head of coarse fish, so there is not much in the way of fry there for the trout to eat.
Pitfour has some perch in it so there will be perch fry, but the trout fry are on the go during the summer(coarse fish fry are late autumn ,early winter), The rest of the waters dont have Fry like the large English Resevoirs. Unfortunatley a lot of the info you read is about larger English waters as regards tackle and the fly patterns.
This part of the world has quite different food for the trout to eat, so the trick is to learn our local waters and their insect life, and take it from there.
damsels and buzzers are universal for most waters so are always a good bet.
Sandy