Three man mechanics

[Kelvin green]

First off what is zone 4 or zone 6?

However, In basic 3 person mechanics, if ball is to be brought in bounds on a sideline it must be lead or trail who does it, In fact I cant think of a time when C would bring the ball in at all ( I'm sure someone here will though). If ball is below FT line extended it is Lead, above FT line extended it is trail. I dont think you need to avoid inbounds from sideline near baseline. NF changed mechanics even to accomodate this better the last couple of years. Personally having the person on the sideline three or four feet away, with me on the baseline is easier to officiate than the person standing right next to you!