BEST TIP: Use a long swing with a loose grip.

Make a long, lazy swing with loose grip and abrupt and maximum wristcock on backswing.

Take a wide stance, lower handle of club, open the clubface and tilt the shaft away from the target.

Play ball off left instep with weight on right foot and hands behind clubhead at impact.

Lob shots are “feel” shots. So a couple of important ingredients for developing feel and having simple, efficient technique are:
(1) keep your grip pressure soft and constant throughout the stroke, and
(2) keep your hands quiet (that is, do not use them actively during thestroke).
The weight of the club and the motion of the swing might cause your wrists to set and release, but the muscles of your hands and wrists are more passive than active.
Mark Blakemore, PGA Professional
See Mark’s instruction site — www.PGAProfessional com