When you play golf there are times when you have to hit low bump and runs and there are times you have to hit high bump and runs. So when you practice you have to practice low shots and high shots. The difference between a low shot and a high shot is in how you swing the club back on the backswing. When I set up and want to hit a low bump and run to a pin I will set up and put the ball back in my stance , hands forward but when I swing the club back I swing back and I want to hood the clubface so that when I go back I want this clubface hooded going back so I am delofting the golf club. So I will set up, ball back, hands forward and when I go back I will have a little bit of wrist hinge but when I do it I am hooding the club and so that allows me to get a low trajectory and hit a bump and run shot. I will set up, ball back, hands forward, go back, hooded clubface where the face is pointing to the golf ball, and then when I come through I have a lower shot htat is going to run. Now if I want a little more height and a little less roll when I go back as I swing back the clubface is going to open up so that the toe of the club is going to be a little more up. Low shot as I go back face is down, the higher shot as I swing the club back the toe of the club is pointing up. So this one I am going to hit a little higher, a little softer shot that is not going to roll as much. I have a higher trajectory and the only thing I am doing different now is letting the clubface open up so I get a higher softer shot. For a low shot hood the clubface. A higher shot allow the clubface to open a little bit. When you practice, practice hitting low shots and high shots by changing your backswing. That way when you get out on the golf course and play you will know how to hit both those shots and you will become better around the green.