For some reason, I have it in my head that there is, or used to be, a point/yardage/distance at which you no longer sent a side judge back on field goal attempts. I was under the impression, for example, the LOS is the 36 and K is attempting a field goal. At this distance, R lines up directly in line with the spot where the holder will place the ball and the uprights. No side judge goes back, and instead the BJ is only responsible for determining if the ball cleared the crossbar and R is responsible for determining if the ball went between the posts.
Is this still a mechanic, was it ever a mechanic, or C) did I dream this, firmly embedding it into my pea-sized brain. I've been calling for 30 years now, things are starting to run together.