Down here in Florida, this doesn't come up very often, but in the Cold Weather Operation section of my POH, it says "Always pull the propeller through by hand, opposite the direction of rotation several times . . . " Why the opposite direction and what is the danger of pulling it through in the normal direction? We are flying the Bo up to Ocoee TN next weekend and the temps are predicted to be in the low '20s at night, so I am trying to figure out how people fly in such God-foresaken conditions!