To piggyback on Salmo's comment on MSH I find it to wholly an economic analysis. What is the absolute minimum investment I am forced to make (escapement) in order to maximize return (dead fish in the boat)? I even have a management plan that says this...

MSH/Y also only looks at one species and not at inter-species interactions. Alaska showed that as you increased pink escapement you significantly increased coho catch. Problem for them was that it was different groups of fishermen (trollers versus seiners) and neither wanted to cut back to help the other.

Here in WA, how many guys who fish the Big Blue, Puget Sound, or Bouy Zooey are willing to let those fish pass upstream for escapement and the local in-river fishermen? Management would be much more exact that way...