Spot and stalk hunting involves seeing an animal before it sees you and making a plan to stalk close enough for a shot. This technique is quite common for the average Oregon deer hunter, especially in Eastern Oregon where hunters can glass long distances.
The Basics of Spot and Stalk Hunting — Maddie Pennaz, Hunters Connect
How to Spot and Stalk Deer — Field & Stream
Intense Spot and Stalk on Buck — The Hunting Public