Canada has a rather effective tool to help wild steelhead in a total C&R fishery. No fishing from the boat. You can use the boat to get anyplace you want but you have to get out of it to fish. This accompliches a couple of things. First of all, it makes it so you can't pull plugs. Wild fish are stupid for those things up there, and locals will beat your ass if they see you doing it. A few years ago there was one river in the Skeena system that still allowed fishing from a boat. Some guys from the states were pulling plugs and catching 25-30 fish a day. We saw them at the launch one morning, and they were telling us that they had been jacked up several times by people who were pissed that they did this day in and day out. It really caused a commotion in town. The next year, they changed the law and included this river in the boat ban.

This would not mean fly fishing only. Single barbless with no bait. Spoons, pink worms, jigs... anything.... Just get out of the boat to do it if its total C&R