Note 1. Whichever grip one uses, when both hands are closed, the lifeline in the palm of your right hand should be sitting on the top of your left thumb. In that position the nail and the lower part of the left thumb must be covered.
Note 2. I have used a wooden golf stick in the demonstrations above for originality, as this is how the game of golf as we know it today was first played, using a wooden sticks. It also sends the message to those who cannot get hold of the modern clubs, that they can still learn the game wherever they are, using the wooden sticks.