Many top rods in B.C. fish nothing but yarn - they call it wool. Often they mix three colors, trim to a very neat ball and fish on. Yarn has nice neutral buoyancy so it bounces along with a natural drift. And you can very rapidly change color and sizes.

Bottom line is a good presentation of an appropriate size and color lure will work wonders, no matter if it’s a fly, a jig, yarn or something else.