Because the shaft of our tees are made to "flex" it's important not to use the ball when inserting them into the ground. The "Height Shoulder" provides a dual purpose in its design. It creates a perfect teed height every time and it provides a nice method for pushing the tee into the ground. We even have two little "recesses" on the disk for this. They are in-line with the holes as well. Pointing the holes towards the fairway is also important because the tee will "Flex" much easier with the holes. Follow the chart below and you'll be perfect!