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Hovering is not really something that you can teach, its just something that you have to do. More than likely you will be neaturally moving the throttle around to keep it where you want it. Something I can tell you is thatwhen youa re hovering, unless you are bailing out, try to keep your throttle movements as small as possible. That goes for control inputs too. The thing that most people do when trying to learn to hover is OVER correct. Just move the throttle 1 click at a time and try to keep the elevator and rudder sticks as small as possible. The more its waggling the more you are going to have to chase it and since most of the waggling comes from you, help yourself out and stay still. The trick is to watch the plane and get ahead of it.. Correct BEFORE the plane gets out of whack. If you can get slightly ahead of the plane you can make very tiny corrections and the plane will just sit there. Watch a video of a pro and you will see, once they settle into a hover unless they want to move the plane around they will just sit there and watch and sometimes go several seconds without moving a thing.