Coordination its all about COORDINATION. All the control surfaces work together to bring this about. As a full scale pilot we turn with aileron and rudder . If we turn with aileron only we do so uncoordinated,if we do so with rudder only we are uncoordinated. As RC pilots we should strive to fly our planes coordinated. Why because the airplane flys better that way. Again I really believe that RC Pilots who fly these planes with Fat Flat Bottom wings and Ten Times To much power never learn how to fly Coordinated because simply put THEY DON'T HAVE TO! The reason I fly coordinated with full scale is saftey and comfort. The reason I have learned and am learning to fly my RC warbirds coordinated is because I have to.You go turning these planes uncoordinated and you might be hauling home fiberglass parts instead of the airplane you arrived with.The RC industry is going to keep pumping out planes that you can fly without worrying about all this Rudder aileron stuff. The reason for that is they want you to stay encouraged FAT and HAPPY and keep buying planes. Again the only way you will ever learn to be a REAL pilot RC or Full Scale is to work hard . When I took full scale flying lessons I found out real fast that my instructer had NO patience for slooppiness.When I took off I was expected to establish a crab angle in order not to drift from the center line of the runway.Why because if your flying out of a busy airport it can keep you alive. Landing was to be on the centerline,because if you get in a habit of missing the centerline then when will you start missing the runway?Again I realize that we are not in the plane but the same principles apply and saftey is at stake.If your sloopy on the controls you are more apt to fly your plane into someone in the pitts ect.If you wish to learn how to fly Coordinated then go purchase a plane that has to be flown that way.My first suggestion is a Great Planes Taylor Craft 55 inch wing and use a 4 stroke 30 . When you go turning this plane without rudder it will look out of wack in the air. Takeoff has to be straight or you will not be able to gain enough speed.Landing can't be to slow or you will stall.If you get to slow base to final you will stall and most likley crash. Thats flying. Try it you will start gaining confidence you never knew you had. Good Luck Lee