Trail..."splitting the court"

[RookieDude]

Worked with a good veteran official last night (using 3 person mechanics)...he's worked about 10 years of basketball.

I noticed, when he is trail, he likes to move up the court in a position about half-way from the opposite sideline...when the dribbler is on the opposite sideline.

He said he likes to get near the middle of the court, depending where the dribbler is, to get a better position.

I asked him about his positioning...he called it "splitting the court".

In your opinions, how far is too far in relationship to the T and C when "splitting the court"?