Larry Dighera wrote:
Those were called 'loops' as I recall.

And there's no way I can think of to pull up at the bottom of a loop
without exceeding one G.

Oh, that's easy!

Turn the aircraft onto its edge, and use some up elevator. See, one G
laterally, one G vertically. One G all 'round (and some very interesting
looks from the passengers).

TheSmokingGnu