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Originally Posted by GreeBoman ehhh yes it would, the mark on the ball will be transferred to the club face...
I use it all the time to see if I am hitting out of the middle of my driver. |
I'm fairly sure that is illegal for anything other than practice. Will dig into it a little bit more.
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The reasons for marking either (other than identification) are to determine the point of contact.
The ball hits the club face in the same place that the club face hits the ball!
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Actually, you can also mark balls in order to line them up for putting, which is fully legal (again, I believe UNLESS it leaves a mark on the putter face).