I myself have used this drill many times to help stabilize my lower body. It’s really is amazing how easily it helps to fix an over-active lower body. By placing a bucket between your thighs, right above your knees (as shown), you can really minimize the movement allowed by your lower body (remember to pinch your knees inwards to hold the bucket in place). Take a look at the picture to better understand what I mean. I personally focus on squeezing my knees inward, it helps to increase resistance and torque while preventing a slide, it’s a very effective combo.
If you tend to suffer from quick hips or you slide them through impact, try this golf drill. Hit balls with a short iron and focus on turning through impact. You’ll see a large difference in ball contact, direction and distance.