Let me explain what I don t like about nymphing...It is damn too efficient!
I was on a stream fishing cutties a few days ago. New stream, promising pools, and, in fact, it turned out that all of them were full of fish (meaning that I caught at least one fish in each). It was great. I lost some, I had refusals, miss takes...the usual stuff when your dry fly fishing.
I caught a good deal of fish. Enough to not being sure how many I caught (between 10 and 20, in 3 hours of wet wading).
On my way back (I usually don t fish), I met a guy fishing in one of the hole. He was actually pulling one nice cuttie out. I said hello and started to talk. He was nymphing and caught 3 more fish in that hole...I had only caught one. I asked him how was his day and told me it was stellar. Fish after fish.
The point is, I am not criticizing the way people fish. But I cannot help myself thinking that in streams, nymphing is a too easy way to catch them.
It is another story on the Bow, where fish are more difficult to catch, and the numbers greater.
Regarding the flies, I changed my mind...I was on a Lake in BNP, and there were cutts rising everywhere (size 10 to 18 inch.). I caught several on different patterns, but I was having several refusal. Once I tied the right pattern, it was crazy! So as Silver Doctor said, at least when a hatch is happening, they can be picky.
Enjoy, it is beautiful outside. Hot weather and cool water...good mix for wet wadding!