Final answer:
The advantage of spinning a football or rifle bullet is to utilize angular momentum to maintain stability and accuracy in flight, preventing wobbling and ensuring a smoother trajectory.
Step-by-step explanation:
The correct spin recovery technique in question likely refers to a procedure used in aviation to recover from an unintentional spin. However, the question text seems to be incorrect as it combines elements of physics and possibly aviation. The actual physics concept being addressed here is the advantage of spinning objects like a football or a rifle bullet to maintain stability during flight. When an object like a football or a rifle bullet is given a spin, it takes advantage of angular momentum to maintain a steadier trajectory and resists perturbations that might cause it to wobble or tumble. This spinning action, due to angular momentum, ensures that the object's axis of rotation remains stable and the object moves smoothly through the air. So, the advantage of giving a football or a rifle bullet a spin is to improve the accuracy and stability of its flight.