Method for Duck-gybes

Hi everyone, before trying it while planing, I’d like to practice the movements in light wind. The more videos and tutorials I watch, the more it seems that the technique boils down to flipping the sail clew-first before passing through the eye of the wind. As a result, you end up on the new tack with the sail already correctly rotated. I'm only talking about sail movement, ignoring footwork for now, although general advice is appreciated anyway.
Is my understanding correct?