Gord Beaman wrote

John, I recall that you're a qualified 747 F/E or Pilot so can
you tell me whether replacing aerodynamic trim of the tailplane
with fuel weight to reduce drag during cruise is still being
done?...I never seem to hear of it anymore, also what's the
proper nomenclature for that?

We never did the fuel thing in the B-707, but we did try
to keep as much luggage/cargo in the aft hold as possible
in order to accomplish the same thing.

Bob