Wow, golfgnome. I have never heard of this. Thanks!
Question: what is the relationship between 'true north' and grain / wind direction?
I use true north as a reference only. When the wind is coming from the West/Northwest I can mark it on each hole so the "swirls" do not confuse me. Also if you are playing in an area where everything breaks toward the ocean, or Indio, or whatever, I can always have that reference.
For those who play on bermuda, grain is always an issue. The grain will typically grow toward the west (setting sun). Once again having a reference helps to eliminate doubt and is by no means an absolute.
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