I shot a compound with sights from about 1975 - 2002 then went back to instinctive shooting stick bows exclusively. when i shot a sight, I used the sight more as a reference than an exact aiming point - sort of "there, that looks about right". I do similar in shooting instinctive.
I think everyone, at least subconsciously, uses a form of gap shooting, your mind is aware of where your bow hand, arrow tip, or whatever are pointing. I practice to learn my point on distance (34 yards) and am vaguely aware of distance and arrow point as I draw and shoot - shots under 34 yards require the arrow to appear below the desired point of impact, longer shots require the arrow point appear above the desired point of impact.
Beyond about 50 or 60 yards it's all instinctive because I can't judge the distance that accurately and just pull back and let it go when it feels right. Sometimes it is, sometimes it isn't!
I think most people would be surprised at their long range accuracy if they didn't think so much about it and just went out and launched lots of arrows at stumps and distance targets.