Something I haven't seen anybody mention is a trick an old acquaintance showed me. I tried it and it was an improvement, but I guess I'm just not born to flatpick. What he showed me was to take some plastic wood filler and put a 3/4-inch or so smear on each side of the pick. Let it dry and the pick is a lot easier to control. And it's nowhere near as messy as Gorilla Snot.david