I like your approach jetmech. Use terms that are otherwise "unexpected" and don't have multiple meanings - like "right" (yours or mine

).
During demonstrations of maneuvers that they will shortly perform I like to tell 'em what I'm about to do, tell them what I'm doing as I demonstrate it; then tell them what they are about to do. Tell em, show em, understand?, then take the ole' finger off the trainer toggle.
Some times trainers don't seem to be making sense to the student. If you find that that's the case, land and have a conversation about how to make it work.