May have been incorrectly identifying my own aiming system as split vision. I have trained many others that have picked it up quite successfully in a very short time.
I see the point when initially establishing the horizontal alignment.
I utilize two engrained windows, in my periphery, between the target and the shadow-like periphery view of the arrow.
I stay focused on the target
Seeing in my periphery the arrow as a dark shadow image
I only assess, in my periphery, the window of light depth between the target and the arrow shadow image
The windows are set as if opening or closing a window shade.
A ½” window is for 15 yards and in…Note: the ½” window designation is actually not a ½” window , but close enough that I have it engrained. Note: the arrow tip could be pointed in the dirt yet, I don’t see it.
A ¼” window for 20 yards
25 yards is my point-on
Beyond 25 yards, I stack
My partner uses the same method and has taken a 2nd, a 3rd and last year, a 1st in the World’s Bowhunter Class. Actually, I taught him the method years ago. The only difference in our methods is that his point-on is 30 yards and his greater skill level permits him to use three windows. I find it personally to be a much less stressful aiming technique. I am actually more accurate using point-of-aim however. I will become stressed and my accuracy starts to deteriorate in short order. Also, this technique has been, by far, my most successful and consistent technique in the field. As being restricted to ground while hunting, I am often unable to see my broadhead, at full draw while in a blind. I can easily view the site window between the target and dark shadow image of the arrow.