Best addition to the bag as far as improving my game! Knowing the distance to determine whether to throw a Luna or a Buzzz was a game changer. Guessing distances/trusting tee signs can be tricky, and knowing the distance is crucial. Having this in my bag is a must. It's also nice for knowing if you're C1 or C2 for all you AM players who love to keep stats on Udisc! (speaking to self!) :D