The technique is easily practiced and is what you do in a PFL.
In a glider you keep the intended landing point in the same place in your vision (neither moving up or down the windscreen) by the use of airbrake and you keep your speed where it should be by the use of the stick.
In a powered aircraft you do the same but usually have flap and power to play with. You may lose either or both so practice sideslips (having first checked the POH to make sure there is no prohibition on their use).
The instructor on my BFR in the US pulled the throttle on returning to the airport in a 172. Too high for the cross runway and not high enough for the intended runway, a typical gliding instructor's trick. When I went for the flap switch he told me I also had an electrical failure. A prolonged sideslip got us right down on to the cross runway and was a total non-event. If your leg gets tired from holding the rudder on just swap over and use the other leg for a while!
