RE: Rudder Controls
The rudder is your buddy. Make a friend of it and it will be very friendly to you.
Serously, are you serious? The rudder is a primary flight control for a reason. True, you can fly around with just alierons, but landing-takeoff-aerobatics-crosswind events- and that's just a trike! When you get a taildragger you'll REALLY need the rudder.....
I personally don't have any rudder mixed into any of my airplanes... I input manually. Sometimes you need a little opposite rudder to keep the nose up in a steeply banked turn, sometimes a little rudder to help kick the tail around, and flying the Twist..... rudder everywhere! So to answer your question, yes the rudder is used for more than taxxing.
Andy