Re: Fast Rivers and "Go To" flies and technique
When the water is high, fast & off color I like to try a dark color or Black Wooly bugger & fish it slow with enough weight to keep it near the bottom. If that don't work,I'll start changing the casting angle(angle the cast further up river to allow it more time to sink). I get a lot of the hits on the swing or just letting it hang downstream, so I spot myself according to where I want the fly to go. I like to move around to share the river so if I'm not catching in one spot I'll cross, move downstream or whatever. I try to fish, seams, holes, rocks top & bottom of pools.
It just seem that when in fast water I do better on the larger flys but I will try smaller stuff but unless I see some activity on the surface., I'll stay subsurface.