RockAndSage
WKR
You're correct, many people glass for short periods and move a significant distance.
I'll sit in one spot for hours before I'm done. Pre dawn is my goal every time, I've spotted alot of game waaaaaay before sunrise that simply can't be done with low-mid grade optics, I tried it for years before alpha glass was a reality for me.
Same. Even when they bed-down before shoot light, you know right where they'll be when they get up around 10am to move to the shade of second bed, as the sun shifts.