I've been trying to get 4 for a while now. I've been playing bass 1 1/4 years. 3 fingers just came naturally to me, first week and I was there. I've recently started on the 3 finger walk, alternating between 1-2-3-2-1-2-3-2-1-2-3-2-1-2-3 etc etc.. And It's not as fast as my 3 finger gallop...