I have been doing some drills with the team I'm coaching this year.
One assumption is that slower pitches are usually lower in the zone than higher pitches (because gravity and spin pulls the ball down while backspin keeps it up -that is also called tunneling in modern pitching).
[url=https://ibb.co/kyT0SQw][img]https://i.ibb.co/pPTZLJM/Scree...18-091554-Chrome.jpg[/img][/url]
Thus first we did a dry drill where we put a bat on the chest and then stride and do a pretty level shoulder turn, then the second rep we pause about a second with the front heel up and about 60-70% of the weight still on the inside of the back leg and then we launch and do a dry turn with more side bend. That way we control the launch and not Automatically commit when the stride foot lands.
https://twitter.com/dominikkeu...C_Ki1irjiAg&s=19
The second drill we do is golf whiffle ball flips from about 20 feet distance.
Coach is kneeling or sitting on a bucket and throwing the whiffle ball like a dart just with the forearm.
First round is high (like upper thigh to belly button) and firm tosses which simulates a riding fastball. Hitter tries to get on top of that ball with a rather level turn.
Second round of tosses is low and slow. The Hitter again will try to replicate the dry turn feel and pause half a second (in reality probably shorter) on the front toe and then turn with side bend trying to hit the ball up the middle.
Third round, you might have guessed it is random mixing of high and fast and slow and low and the Hitter must adjust as good as he can.
That approach kinda stratifies pitches and involves some kind of guessing, so that in a game you automatically adjust to a slower pitch. Sometimes with that approach you will get caught with a low FB or a high drop in curve but statistically that is more rare so you can just take those pitches until the pitcher proves he can do it consistently. Most amateur pitchers certainly won't be able to do that and will have to lower to higher stratification just due to effect of gravity.