If you use keyboard, you might as well NOT use any rudder at all.
If you don't use ANY rudder at all, you might as well not fly until you get a twisty stick.
I'm serious. It's like trying to fly without any ailerons. You MIGHT be able to cause the plane to roll left or right, but you're screwing yourself over in EVERY way possible. It's as important as a throttle or any other major axis of control.
Might as well fly without any numpad or hat switch views mapped, as to fly with keyboard rudder or no rudder at all. It's harsh, but go play Counter-Strike or something that only requires a mouse.
Even the WORST twisty stick is better than no twisty-stick. It's a minimum requirement for this game.
That being said, twisty stick is the minimum, but rudder pedals are much better (once you relearn how to use 'em!)
