I've found it's highly dependent on the type of coho and the water conditions. Early run CR trib fish here in SWW and NW OR (Clack more so than the Sandy),
tend to be super lock-jawed. Either tiny stuff, basically soft hackle type stuff in sizes 8 & 10 tied with some flash and whatever color (if any) they like that day/minute. Bigger piss-em-off stuff will work at first light, or if you can find them stopped in a resting spot when they're on the move during a freshet.
Late run fish down here are MUCH more receptive. They'll take swung flies in runs, dead-drifted in pocket water, and stripped/jigged stuff in pools. They can also be typical coho middle-fin flipping turds.
I would presume there's a similar early/late run disparity in bitey-ness up your way.
Some of standards in my coho box:
> Polar shrimps with flash ribbing have been good swung, and dead drifted (weighted).
> Weighted marabou patterns in combo's of black, pink, orange, chartreuese, and from what I've heard apparently I need to try blue.
> Anything bright and nymphy tied on #2 tuna live bait hooks for pocket water (Lifters are also a good choice).
> A pattern I call a "Mega Comet" which works well fished all three ways.
Basically it's an over sized comet tied with clear vinyl ribbing over a flash (lateral scale) base (ala Crazy Charlie). The tail and wing are a mix of FisHair and pearl flashabou and/or fine lateral scale. Tied extra-long, almost Spey style, with a sparse Schlappen collar and lead eyes. This has been a good pattern for me, particularly the top color combo. Works swung, stripped, and dead-drifted.:
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