Beyond any doubt, it's a size F5 or F7 Perch Scale Flatfish for rainbows. For kokanee, it's always red Wedding Ring with a treble hook and white shoe peg corn on each barb. And don't forget the snubber.
When fly fishing for Westslope Cutts, it's an Elk Hair Caddis or a Red Humpy in sizes 10-16.
Blessings,
Lotech Joe
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1 Cor 3: 16-17