While I agree that fishing on feeding chinook is the biggest part of the problem. the other problem is that the hatcheries don't select for the success of the biggest fish that return. That's why wild PS chinook are considerably larger than hatchery PS chinook.

They only thing WDFW has direct control over is what they spawn. They have vast excesses of fish to choose from typically. Don't choose at random. Why not counteract the negative size selection by spawning the biggest fish first?
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Dig Deep!