I was doing the same thing yesterday: trying to refine my purling. I usually grasp the yarn between my index finger and thumb and sort of throw it around with my left hand--almost an English style but in the wrong hand. It goes very quickly for me. I found I was able to push the yard fairly easily with my middle or index finger. Yet, I still seem to want to use my original method. It turns out the same, so.... I don't know if it matters as long as the results are what you want. But I could be wrong! I'm a new knitter--6 months--relatively speaking!
Sell your clothes; keep your thoughts.
--Henry David Thoreau