If you use a laser rangefinder on the golf course, you get an accurate distance to the pin. It would be nice to know where the pin is in relation to the center of the green, though. A location indicator attached to the pin, or on the 150-yard marker, if they’re used, is only an approximation.
As you’re approaching your ball, and before it’s your turn to hit, find a sprinkler head with a yardage affixed and stand right above it. Shoot the pin and compare the difference between the yardage to the pin and the yardage shown on the sprinkler head.
If the sprinkler head yardage is higher, the pin is nearer to the front of the green. If the sprinkler head yardage is less, the pin is nearer to the back of the green.
Most of the time we are short with our approaches (but that’s another post). If you know because of what you just found out that the pin is toward the front of the green, you might what to take a longer club to make sure your ball gets to the green.
If the pin is behind the center of the green, you can take less club and hit an easier shot, knowing that you still have enough club to get the ball onto the green. Remember, most greens are at leasts 30 yards deep, which gives you plenty of room for error.