A range keeper like the Columbia Sturgeon should be implemented on halibuts.
But again, this is only relevent to sports fisherman and not trawlers.

Sounds like a good plan, but all good plans end up hurting us folks.

I used to sort out dead BUTTs up to 300#+ and throwing them back into the ocean while I was on a factory trawler in the early 90's.
What a waste of life and resource.