I was in the GSMNP from 6/18-6/25 as well. I hit up Abrams Creek, I believe. Never could set the hook but I was getting quite a few hits. I think I was using a dry fly that was a little too large for the particular fish that were hitting. I think I was throwing a 12 when I should have been throwing a 14 or maybe even a 16. But before I could change out the fly I caught an over hanging limb and lost my only leader
I'll get Jim* this fall when I'm down there!
(*Jim the character of the song Yellow Backed Fly by Steven Martin & The Steep Canyon Rangers off Martin's sophomore album Rare Bird Alert)