John,
I am curious to know to what extent you rely on exact distances during a tournament versus "just seeing the shot".
Example 1
You are "halv a sandwedge" from the front of a green some 7-8 feet below your feet. The contours of the green are easy to read from where you stand. Would you pick a spot and just use your experience to feel how much lag pressure is needed to land the ball on your spot - or would you want your caddie to give the exact distance to it.
Example 2
The 200 yard marker is some 15 yards left of you and the pin seems to be on the middle of the green. You know the green is rather flat. Would you simply produce your "more-or-less 205" yards shot or would you go into details and have a discussion with your caddie regarding to determine exact distance and decide the exact spot where you want to land the ball?
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When James Durham recorded 94 at the Old Course at St Andrews in 1767, he set a course record that lasted 86 years. Golf: A curious sport whose object is to put a very small ball in a very small hole with implements ill desiged for the purpose - Sir Winston Churchill