TBird-
Might have agreed with you a couple years ago, but, we had many biters that moved to the rig and grabed it, and you could see it happen.
We saw it most on our fly out to a remote system.
We had small flies tied with a knot of yarn and a little crystal flash on it, seemed to work.
Yes, there were many flossed fish, but it was good to see a Sockeye move to the lure and grab it. I knew it was working as I can remember at least 10 fish hooked right in the beak and you don't hook fish in the beak flossing.