The performance of a golf club may be enhanced through the provision of a void space behind a face plate and above the sole plate, to decrease club weight and provide single or combinations of selectable weighting elements within volumetric coordinates of an orthonormal matrix about the void space. The weighting coordinates are provided in response to ball strike, flight analysis and physiologic observation of the golf strike swing. Ball backspin, trajectory, penetration and hook or slice may be modified through the use of a definable weighting strategy.