Martin and Sara of School of Golf talked about the myth of never lifting your heel of your lead foot in the golf swing, and Martin suggested that lifting the heel could generate more turn in the back swing and more power overall.
There are two keys to lifting your heel. You should start the downswing by planting your heel back onto the ground, and also you have to make sure that you put your foot back in the same position it was in at address.
There was a magazine many years ago called Golf Illustrated (I think there have been other Golf Illustrateds before and since) and I remember one issue where the banner story was John Daly’s tip to slam the heel for power (which is essentially the same thing as this lesson).
Another Golf Illustrated classic banner story was “Chi Chi’s Chip Tips”, where Chi Chi suggested using your fairway woods to hit bump-and-runs (this is back about 25 years ago in the days before hybrids existed).