These fish are very strange. I'd say they are the easiest fish to catch with a fly IF you can find them. That's the hard part. They will also trick you even if you do find them. One day they will hit every thing that touches the water. The next day you will not even get a bite and swear all the fish left the area. It's a cruel game they play but when they cooperate it's glorious.
I caught my biggest the other day right at my feet.
Such a different experience from when I was catching them before. I'd like to think it was staging for spawning but it was the only other fish I caught. Were there more fish and they just weren't hitting? Has the amount of fish fallen off? Who knows, I guess it's the enigma that keeps us coming back to figure out.