I used to use 50% as a guideline for judging winds blowing directly into or from behind. I find that still works pretty well for hitting into the wind, but with downwind shots 50% isn't getting me close.
Tonight on St. George's, I had a 183yd shot with a 20mph downwind. I estimated a 163-yard shot. I hit my 7-iron (170 yards) with full spin, thinking it would travel 162 yards.
The shot went 223 yards. I realize English courses are hard and fast, but that shot went 40 yards farther. I also copied and printed Royboy1953's chart but nothing seems consistent.
I did fine with the winds until I got to the Master tier. Now I'm a Tour Master and things have gotten worse. I've practiced and still can't come up with anything that's remotely consistent on how to gauged downwind shots.
Thanks for any advice.