The Corsair, for instance, tends to roll to the left, because the prop is rotating clockwise from the pilots point of view. The plane wants to torque in the opposite direction. So planes with the prop rotating counter clockwise, from the pilots point of view,should torque to the right. The difference it makes for planes with counter clockwise props is it easier for them to turn to the right. Also, when you're flying with out auto pilot, the plane will tend to roll to the right. No big deal, but it's more realistic. It's not only the right thing to do, it's the law.
