"What if it was 800 pinks and 203 wild steelhead? Would it be worth the effort then?"

Even 25 steelies would be worth it. They have to see them first, is the problem. I know what 1000 pinks looks like, and a few steelies in that bag, especially if you don't dry it up first, are impossible to see. I think as long as you DON'T penalize them for the few they miss, they might be willing to make some efforts to save them in quantities. Otherwise they end up selling them as humpies anyway because there's no market for the steelies.

"I would have far less objection to commercial fishing if they put some effort into fishery enhancement and more responsible harvesting."

In this state I know of absolutely none, short of the the licensing fees. Alaska had some pretty promising "aquaculture" projects in S.E. when I was up there, primarily with chums. I don't know what the status is these days, but it was initially funded with money from seine boat operating licenses.

As far as responsible harvesting, the operators do what the regs. allow. Why the regs. allow what they do I have no idea (rationally speaking).