Well,,,,, kind of a combination of some of those. My distance vision isn't too great, but my peripheral vision is good and I pick up even small movement easily. I tend to sit places with white oaks or hickory, or other places I've seen squirrel activity on the past. If not siting still its a combination of modified still hunting, and hear and stalk rather than spot and stalk. I move slowly until I see or hear squirrel activity, even if it is the squirrel barking at me. Then I stalk the sound. When real close, or if I've spotted my game, I stop and stay still until a shot is presented.