Squish the headcover
Hitting balls barefoot is nothing new. Sam Snead did it in the 1950s. You can do it, too, and get some of that terrific tempo and timing Snead was famous for.
Put a headcover on the ground and cover it with the middle of your front foot. Make your backswing, and when your hands get to chest high, make sure you’re squishing the headcover (left). Your hands and arms will respond by following your body into the downswing.
Pushing into the ground at halfway back will help you add speed later in the swing.