It really does scare them.

What is funny, or depressing, to me is that on some study streams (pristine so you can throw away the Habitat, Hatchery, or Hydro H's) in Alaska they allow pretty huge pink escapements (and still have good fisheries on the pinks) with the result that CATCH of coho goes up something like 5X.

Just how big of a stick do they need to be hit with?