I love the 2 pin sight. Top pin is set. I set mine at 20 yds. My second pin is adjustable and I usually have it set at 30 yds. If I need more than 30, I just turn the knob to whatever I need. 2 pins covers just about everything. If I need 40, then I turn the knob. I guess you could set one pin at 30 and consciously hold under at 20 and over at 40.