Salama

I know that there is hooking mortality and that it does happen. I just am of the belief that with single barbless artificials ( swung flies inparticular such mortality is extremely rare. However you bring up another issue, that of warm water hooking mortality. I'd be all for regs that close wild steelhead fisheries when water temps are above (XX ?) degrees.
Having read the mortalitiy studies conducted in Canada I learned that nearly all hooking mortality is the result of serious injury to the fish caused by deep hooking, and or the associated injuries of removing hooks that are deep and barbed.
Since that discussion cam about while discussing my bussiness as a guidethe only reletive type of fishing to talk about is swinging barbless flies on single hooks, in doing so the number of fish hooked deep is near zero and seeing as how i wouldn'd run a guide trip in water over abou 65 degrees warm water mortality is also extremely close to zero.
I feel extremely confident in saying that in the course of my fishing life, 20 years or so, i have had no wild steelhead hooked deep or in water so warm as to have associated mortality. Therefore with confidence i can say I have never had a steelhead die as the resullt of hooking mortality.