Take 5 balls and stick tees into the ground 20, 30, 40 and 50 feet from a hole. Aim to putt five balls in a row from each tee to within 4 feet of the hole. Do mix up the distance to ensure you do not constantly increase your stroke. (30, 20, 40 and 50) Remember, you can’t move on to the next distance unless you get all 5 balls within 4 feet of the hole.