Leading with your hands may be easy when chipping and for small shots, but when it comes to full swing, it’s tough to know at impact if your hands are really in the proper position. Flipping or scooping is usually caused by a dominant trail hand wanting to take over, or not turning your body and getting out of the way for your hands to follow through.
To practice, try holding an alignment stick together with the grip so it rests on your lead hip, or pushing a stick through the hole of the grip, to create an elongated club. This stick will prevent flipping of the wrists through impact because it is blocked by your body. Take small or half swings, getting your body to turn out of the way so your hands can lead through impact. It will help with short game, and most importantly impact in general