My high school golf coach was an grizzled old-timer named Roy Spofford whom we called Spoff. Spoff taught the degenerate math class, avidly played the ponies, and suffered terribly from emphasema from years of smoking. Picture Burgess Meredith from his later movies and you'll have the mental image.
Spoff loved angles. Litterally and figuratively. While he wasn't much of a golf coach, he was a great judge of character and situations, and he would do what he could to exploit an angle.
Anyway, we'd get out of school early to go play our matches, which were 18 holes. The coaches, many of whom were teachers, loved the perk of playing some very nice courses themselves. Spoff, who no longer played, often volunteered to serve as the starter. The other coaches LOVED this.. they would head out for a quick round in advance of their teams, and they would finish early and "coach" their teams at the finish. This meant that old Spoff was often the only coach of any team around the first tee box.
Old Spoff carried an original PING A1 putter, using it upside down as a cane mostly, and next to his racing forms he always had couple rock hard pinnacles in the pocket of his old windbreaker.
After he'd get the groups organized on the tee box and go over any local rules, Spoff would wander over to the putting green (seems most of our local courses had the practice putting green next to the first tee.) He would drop his pinnacles on the green and softly putter about...
...but there was a very unusual correlation, a subtle pattern, which was discernable only to those in the know... just as some kid from the opposing team was taking it back off the first tee, old Spoff would hammer one of those pinnacle rocks with his PING A1 to the far end of the green... and a shrill tuning fork PIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIINNNNNNNNNNNNNNNNNNNGGGGGGGGGGG would pierce the air exactly at the moment it was too late for the poor kid to bail out of his swing.
Many times we would start a match one-up after one against some brash kid who was just lucky to find his errant first tee ball.
Sportsman like, it was not, but that was old Spoff. All about the angles.