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The golf swing is as pure a reflection of personality as any athletic action a person can perform, as unique as a snowflake, more telling than a signature. Bob Jones
As described in 7-14, the hip turn is a product of the Knee Bend and Waist Bend. Not otherwise could the weight be shifted and the Shoulder Turn Axis be tilted without moving the Head.
Hulu Hula flexibility refers to the ability of the hips and shoulders to work independently but coordinated in order to "clear" the right hip and avoid roundhousing. Weight Shift is a HIP motion only, otherwise there is swaying.
A stationary head is one of the 3 essentials along with balance and rhythm. 2-0.