I'm pretty simple so I'll respond I went with 50% because I have been shooting a bow for nearly 45 years and my kill zone has been about the same for the last 30 years or so. In the springtime when I break out my bow and start shooting I'm deadly at 20 yards but not lights out at 30 yards and beyond. After about 3 weeks I'm back to being deadly at 30 and that's all I really need. I do practices beyond 30 but eventually I lose or bust an arrow and that gets expensive real quick. Once I dial in then I start practicing real life shooting from height.