RE: 1 eye or 2
well from what im seeing its all in personal prefrense. i no im more accurate with one closed, but i have done that since i started. Im tryin to keep them both open but in alot of light i cant do it. when its a little dim i can becuase my pins are bright. I have .019 but they are bright i have to focus on my pin and put it on the target or cover my fibers up or they are to bright. 2 me it seems its up to u, shot the way u want and whats working for u.