In the mornings ill glass as far as my spotter will let me. In the evenings I rely on the binos. Typically if I can find em in the evening with a couple hours of light I can close the distance before dark. But with the spotter it will really mislead you on how far the game is. Im good at judging up to 300 yards or so with my eyeballs as a rangefinder. But behind the spotter 2 miles can quickly turn to four/five and I end up racing the sun.