Your on the correct path now. Its not that you will always hold the same rudder throughout the maneuver, just the corrections needed to maintain heading. It may need to be held through the maneuver, or it may only need slight corrections at different intervals along the path. Thats where burning fuel makes these things second nature. You will almost feel what you need before your plane actually needs it. The more you know your plane, the more you will know what its going to need in certain circumstances to keep the flight level , on heading, pretty and graceful.