In order to locate your putter's sweetspot, therefore, take the following steps:

1. Stand up straight, hold the grip of the putter by your fingertips so it is out in front of you. Take care to hold it in such a way that it is angled in the same way it is when you putt. Do not hold it vertically (unless, of course, it is vertical when you putt!).

2. Take a key, pen, or something similar in the other hand, and tap around the face, feeling any vibration in your fingertips as you see the head rotate and wobble.

3. Tap around until you find the place where there is no rotation or wobble and the vibration is negligible.

4. Mark that spot on the top line of the putter with a marker pen, and then repeat the process in 1. to 3. above to double-check you have 'hit the spot'.

5. Carefully file a groove or punch a mark where you have marked the top line, and then fill it with a little paint. You now have your true guide as to where to address your putts.

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