Like the title says... I remember reading about this in one of Chuck's bass method books about 15 yrs. ago. I tried it for a day or two and forgot about it. Recently I bought the "Electric Bass Guitar" book, a compilation of Guitar Player and Bass Player articles from the 70's and 80's and I rediscovered it. It's pretty simple-use one of your plucking-hand fingers like a pick by going back and forth with the fingertip. I've tried index, middle and ring and I'm finding middle works best for me. The trick is to only move your finger as much as is necessary to get a good sound and to get a similar tone from both sides of the finger-obviously the nail gives a clickier sound. I'm really excited about expanding my right-hand technique--I'm good with two fingers and pretty dangerous (if I may say so myself) with a pick. It's funny, my obsession with practicing the double bass in the last few months is starting to spill over to BG. I've been checking out Victor Wooten's double thumbing and I'm eager to learn more about Gary Willis's 3 finger concept. Fun stuff!