shifting the topic away from hatchery fish for a moment.
If the objective is to protect and increase the population of wild fish, then I think there should be new thinking on what "bait" is allowed. Especially considering that steelhead continue to live on after spawning. Keep in mind what is being done re. lead shot and bird hunting.
* There is evidence of steelhead being caught that have multiple baits in their gut
* Borax and some other bait cures have been proven to be poisonous to fish (especially in the concentrations that exist in 'cured': egg, deli-shrimp, and Ghost Shrimp)
* although steel hooks have been known to dissolve in a fishes system, many synthetic: worms, eggs, shrimp, and other artificial baits will not
I see an opportunity for either: an additional regulation, or peer agreement by those fishing the river, to not use baits that will harm fish that swallow that bait and either: shake the hook, or get released.
Also and opportunity for someone, or some company, to develop and promote successful baits that do not harm steelhead. (maybe even benefit their health )