I have the same problem as you, gettin old is a b**ch, but it beats the alternative (dieing). I tried the paint, glo sights, scope etc. I found that the scope was great for targets that don't move, or will stand still and let you find them in the scope. So I tried a red dot scope with no magnification, I think that it's great. just put the dot where you want the bullet to go, and squeeze the trigger. Killin deer is as easy as it was when I was 22.