3 man mechanics in 1987?

[bob jenkins]

Originally Posted by daveg144

The lead either never rotated or very seldom rotated. Instead, he'd go directly under the basket and hunch over to see the play.

(snip)
On some plays, the slot official was as low as the low block and only about two steps outside the lane. He could have grabbed a rebound or played defense!

It sounds to me like this was a "quirk" of the particular official(s), and not the standard mechanics.