Why is Large Inertia so Important?
Off-center hits cause the head to turn during the impact, and this causes curvature of the flight of the ball and reduces its distance. Larger moments of inertia substantially reduce these ill effects. While the moment of inertia about a vertical axis tends to be the most important and certainly is the most talked about industry, other inertia terms are often also important. A full description requires 6 inertia terms.
