Anyone remember Rog Howe?
...and then there was the late Geoff Bashford, who was 5 ft nothing. Not only did he need the Astro stool at its max height but he tip-toed to reach the eye-piece. AND the eye-piece was at the lowest point! Can't imagine Geoff doing a 2-minute shot while maintaining the 'tip-toe' posture. A fine nav instructor and a true gentleman.