For what reason are select fisheries deemed "fly fishing only" Assuming I catch and release(as I always do), what is the difference what type of rod and reel I use? I can understand how a worm might catch more trout(but not as exciting of course), but I would think that lighter tackle( fly rod) would take longer to land the fish and increase its chance of dying. Or maybe its just to promote fly fishing, which I am in no way against. So why is that rule in place?