I have never used the worm for chums, but bet it would work. A top chum fly is the cerise string leech, which doesn't look that much diffrent from a pink worm.

No, my favorite for steelhead and chums is a flaot and jig. Cerise seems to be tops for chums. Several times I have seen cerise dramatically outfish chartreuse.
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No huevos no pollo.