I've been amazed while watching some of the videos of shooters and how steady the image is "through the camera" lens.
A few days ago I was setting up my cobbled together R9 in NC for the DIFTA fun shoot and took notice of how I "bobbed and weaved" while sitting on a bucket using cross sticks "Hunter Class Field Target style". While I've NEVER been as steady shooting "from the bucket" as the shooters in the videos, I do notice that I'm not as steady as I was a few years ago! LOL.....I do wish that I HAD my hft shooting style "perfected" back when I didn't sway as much!!!
Another issue seems to be my eyesight isn't as responsive as it was even a few years ago. I've noticed this when setting up a range tape on my scope. Hunter Class FT limits scope power to 12x max so range finding never was very precise past 30 yards, however I USED to get enough precision to read 50 yards within plus/minus 5 yards. When setting up my scope range tape a couple days ago in good light I noticed when I got a "50 yard range find at 12x", marked the tape on the scope bell, then did the "re-find" to verify my first marks........well, the second range find didn't even come to the original mark. Seems that my eye would try to adjust to the image and throw off my perception of "sharp vs fuzzy".
Anywhoo........seems that there should be another "T" difficulty added to the Troyer rating fer folks 65 & older. LOL