Hi Slicepong, Yes what you’ve said there is pretty much spot on in that when it’s a highish, shortish ball it’s more of a flatter topspin drive than a pure out and out flat smash. You are trying of course to come over the top of the ball to keep it down but hitting through fairly flat to get the power but naturally with a close bat angle and coming over the top there will be some topspin on these types of shots still. Where as an out and out smash is very flat like you said.
Sounds like you have it pretty clear and accurate in your head, but it’s always nice to be sure what you are trying to aim for. I think adjusting the bat angle on the higher shorter balls will become more natural with practice and not rushing again as we spoke about before, it’s about being firm but not too forceful on these shots and gradually upping the power and speed when you feel the consistency is pretty high 🙂