the answers are yes and no. You have to coordinate turns using both ruder and ailerons for the most effective turn. The trainer is different then more advanced aircraft. When you use the rudder the trainer rolls in the direction of the turn and points heads down. you must learn to use the aielerons and the rudder together for a better turn. The old timer meant to use the rudder to adjust the yaw of the aircraft meaning adjusting the heading of the plane when you are near the ground and unable to tilt the wings with the ailerons for fear of cartwheeling by touching a wingtip on the ground. This comes up more when you have lower wings. Also a coordinated turn using rudder and ailerons if faster and more precise when you get the fell for it so you don't have to make those long 747 type landing approaches. You should be practicing flat turns high up using the rudder for yaw and neuatralizing the roll and downward heading with the elevator and ailerons. These skills come in handy when you have to make a landing in a severe crosswind situation. Our field has crosswinds about 75 percent of the time and these skills come in handy for side slipping the aircraft and when you use them consistently you never have to think about them again. The more advanced planes will have less rudder aileron coupling and you will have to increase you use of rudder to maintain headings in good looking rolls and knife edge flights and hammerheads, so in other words you might not use it much now but if you want to improve and advance in the hobby start adding the rudder to your skill set and you will have less problems in the future. The reason you are not originally trained about rudders in the trainer is that you have enough to think about to fly the plane before we add another control surface for you to think about. When I train a person to fly the flat turn is near the end of the lessons just before landings due to the fact of the consistent crosswinds at our field.