Thomas' experience versus mine, which is limited, shows that there is no right way except the one that works for you. Watch how you move from forge to anvil to vise. I Move clock wise, forge to my left, anvil to my right so cranking with the left hand just feels right for me. Vise and bench is behind me to form a small triangle.
I agree with Finnr that you burn way less coal and steel with a hand blower.