I think that it is important to vary distance, Angle and other factors of practice.
I can shoot a bag at 25 yards and and break arrows all day long, but it doesnt do anything for my overall ability, except lock my form.
I usually shoot 10 times on my first two pins then take a stroll around the target, stop at random distances and angles and shoot.
I also shoot from my roof, between the crotches of trees and through holes in set up cover.
I want to make sure that when the time comes, I know exactly what is going to happen
I usually shoot some "stay warm arrows" 10 a day maybe, at a standard length, just to keep fresh.
I do a serious practice a coupla times a week.