Using a rangefinder is a near necessity nowadays. Rangefinders can be found at your weekly four-ball, junior golf, and all the way up to the PGA and LPGA tours.
Knowing your yardage is an essential part of getting better. The difference between thinking you should hit a 7 iron and knowing you should is huge. It could even be the difference between breaking 80 and hanging your head after yet another 85.
