People mentioning use of rudder at stall to pick up a wing.
As I see it there are two different things being discussed as the same thing which they are not.
Assuming in my example a wing drop to the left, from a straight and level slow decelerated stall,
Option 1. Using slight opposite rudder to
prevent further wing drop.
Option 2. Using lots of opposite rudder to
pick up the dropped wing to wings level.
Option 1. is the correct thing to do, you are only preventing further wing drop by yawing the aircraft slightly thereby decreasing the local AOA on the dropped wing and restoring some lift.
Option 2. is too extreme. Whilst it is true by STRONGLY yawing with opposite rudder you will pick up the wing, you will almost certainly decelerate the other wing changing the RAF and increasing AOA creating a possible wing drop to the right. In addition, if you have forgotten to release your stick back pressure you now have the perfect set up to enter a rapid spin to the right!
Remember even if you do nothing else, simply releasing the elevator back pressure by moving the stick approx 1-2 inches forward is enough to un-stall the wings and the aircraft will accelerate and fly out of the stall.
Power addition minimises height loss by accelerating the aircraft more quickly.
When you un-stall by moving the stick 1-2 inches forward the aircraft un-stalls and the wing drop will stop. When you have a safe airspeed above the stall you can simply roll level with aileron.
