Run,

They use it where there are excess harvest-able hatchery fish and low conservation concerns. Where opportunity is not significantly limited by effort.

Willapa is perfect for this as a terminal fishery that is essentially all hatchery chinook. There is a wipeout gillnet fishery too, so conservation is not really a major goal (despite recent rhetoric otherwise).

Using this in say MA9/10 would dastically shorten the season, so you trade rods for opportnity, not a good bargain. On willapa the managers really would like more rec harvest so they give us more rods (doesn't really help that much, but I have to admit it is fun). Don't think you'll ever see this in areas where there is a high abundance of wild fish (MA9, B10) as it could increase wild fish impacts and potentially limit opportunity.