i believe the answer is to use wild stock for breeding in the hatcherys everyyear. hatchery fish and wild fish breed in the wild every year.and their off spring are not clipped and everyone somehow still thinks there is some pure wild strain of steelhead and salmon in our rivers.our hatcheirs can be ran better but they have to be ran or we will not be fishing. The swirling disease was a microbe in the water that effected the trout in the hatcheirs .they have cured this problem by using uv light to treat the water. for the most part it has worked. have a problem , find a answer *****ing never helps it feels good but it never helps.