A helpful visual for me is seeing the 'tripod' in my minds eye.
The legs of the tripod are your two legs, and a line from under your chin to the ground between your feet (but towards the plane line). Due to the forward lean from the hips (your head being closer to the plane line than the centers of your feet) - you can imagine a triangle between these points 'on the ground', as the points the legs would touch.
Thus, the 'tripod'. A full 3-D visual of a pyramid with its tip under your chin. I find an added benefit of this visual is that it also helps me maintain my spine angle.
Very useful for quieting down extra motion for those that are flexible enough to make a good turn and be very 'stable' - especially useful for hitters IMO.
Of course there is always my dad's visual he told me when I was a kid (for the men anyway) - imagine a string tied around your private parts that goes straight down into the ground - don't hurt yourself!
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"Support the On Plane Swinging Force in Balance"
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