[Yoda]

When chipping or pitching from heavy grass would you
change the hinge action for with the grain of the
the grass as to against the grain of the grass.
What is the best hinge action for the two shots?
Would you use "club in palm of hand" for the shots?
Seems like the longer swing to get the ball out of
heavy grass requires the club to be in the fingers of
the grip. Is this correct?

Personally, I would not change my grip. The Clubshaft should be under the heel of the Left Hand and in the fingers of the Right. The Grip should be firmer than usual to avoid Clubhead twisting during the grass encounter. Emphasize Pivot (the 'Left-Right' mark-time motion of the Feet and slight rotary motion of the Hips and Shoulders) and Arm Swing. Minimize Hand Action unless you are employing the Pause Minor Basic Stroke, i.e., Arm Swing back and a stopping of the Left Hand (and passing by the Right) through Impact. This last Stroke is essentially a deliberate 'Throwaway', but with practice, it can be a useful alternative when you need a higher, softer shot.

The real key to this shot is the Angle/Arc of Attack. It must be steeper than normal to minimize grass contact prior to Impact. Achieving this steeper Clubhead approach is easy: Simply move your Pivot Center (Head or 'Point between the Shoulders') slightly left of its normal Centered location. To further encourage a steeper angle (relative to the Ball) and to increase loft, you may also want to hit a 'Cut' shot, i.e., swing the Clubhead along a slightly Open Plane Line with an Open Clubface.