Well, I'm guessing this is an age old issue.
My thumb picks are snug, yet comfortable. I have NO problems with my pick slipping until I play under hot stage lights and sweat a bit. It's not horrible, but there is indeed a loss of technique when this happens.
I'm quite sure I'm not the first to experience this, so I turn to you O fellow Chetboarders!
People have recommended Gorilla Snot (which seems to be out of produduction) I've also tried tighter picks but would like to stick to my prefered pick if at all possible! A good ol' Fred Kelly Heavy!
Thanks Sooooo Much All!
Tim
