Terminal fisheries are absolutely the best idea to protect weak stocks. If a river has a weak stock, don't fish it. If it has a healthy one, fish it with fish traps. Take out the targeted species, release the rest.

Sounds pretty simple to me. What a political nightmare to get people to go for it.

No more bycatch, of fish birds, whales, dolphins, dumbass fishermen who run over nets, etc. Only the fish who are targeted are retained. Anything that simple would be fought over for twenty years while the nets continue to rape.
If B.A.N. finally passes, I bet we'd have the commercial fishers singing that tune in about five minutes, and the tribes may even chime in. Who knows?
Fish on...
Todd.