[bioengine]

Ground forces,
There are two forces.
Normal forces are applied perpendicular to the ground.( your centre of mass or body weight.
Second force is called shear force which is applied parallel to the surface of the ground.
The Left foot shear force applied is towards the target and perpendicular to away from your tows.
The right foot is perpendicular are from your heal and perpedicular from away from your toes.
Lower body mechanics and hence stability can be defined by two components of movement:
linear and rotational. The linear component is defined by the interaction or the relationship of the center of pressure between the two feet and the center of mass of the golfer. The
rotational component is defined by the force couple created at the hips segment as a result of shear force application by the feet.
Under normal conditions, effective lower body mechanics for a golfer start with a shift of the center of pressure toward the rear foot as the club is "taken away" during the initial portion of theback swing. This shift moves the center of pressure behind the center of mass relative to an axis running along the target line. As the golfer nears the "top" of the back swing and begins transition from back swing rotation into down swing acceleration the center of pressure shifts forward toward the front foot. It is this action creating forward momentum that facilitates the production of shear force at the feet/ground interface. Ground reaction to the shear force created by the feet produces a force couple, which is translated through the legs to the hips segment. The force couple acts on the hips segment to produce torque and rotary acceleration.
(On force plates pressure line is diagonal to from right heal to outside left toes).This creates equal opposite forces. Ground reaction forces. This is what creates stabilization,hip torque and rotational speed.

Hips move perpendicular to the spine, they don't raise this is a illusion in golf. If you have slight right lateral bend of the spine, the hips appear raised or tilt cause they are moving perpendicular to the spine.
The shoulders are perpendicular to the spine they rotate perpedicular to the spine. Only time shoulders appear to be raised is from right bending of the spine.
In golf the only reason the left shoulder apears to be higher than the right is because the right hand is lower than the left hand on the club. In an effective movement pattern.

Bucket next time I will elaborate on rotation vs lateral motion.