If the nates are in serious trouble just stop all harvest on them. If they are making the established escapement goals why not collect brood stock to allow for a better quality fish for "harvest" catch & kill. The worlds not perfect, but I don't see why we accept those 4 - 7 lb skanky hatchery brats that we get now.
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It's wonderful to be good. But it's better if you're lucky and good!