A snap roll will drop your speed quick. Not a good thing to use for the purpose if low and dead-stick...

Immelman will dop your speed, gain altitude and turn you around all at once.

Anything that puts a large G load on will drop your speed. Its just a matter of picking which maneuver to use for the situation that requires you to slow down.

There's always pulling the left stick back. don't stop the engine... you lose speed faster if the prop is turning slowly than if it stops.

For late in the landing approach... wagging the rudder and preventing roll with ailerons (and using elevator to prevent the pitch-down that some planes have) is usually the best choice.