Engine height

[CHANCE1234]

So I know the anti ventilatin plate is supposed to be about one inch above the lowest portion of the stern. But does that mean when the anti ventilation plate is trimmed parallel to the bottom of the boat or trimmed all the way down? The below picture is trimmed all the way down (or very close to it). As it is now in the pic the leading edge of the ventilation plate is about where I think it should be after I raised the engine two holes. Should I trim the engine up so the anti ventilation plate is parallel to the keel to get the best idea of where I need to be height wise? Thanks guys