Its actually something that haunted me for a long time but am starting to get better and better at it. One thing I have noticed though is I am gettting some really low shots from time to time when I try throwing "flat" (IE minimal hyzer/anhyzer angle) which I generally lean towards a slight hyzer. I think I can resolve this by going a lttile more low to high on the pull.
I think for most players a hyzer release is their power move. And it could very well be that it's because it encourages this lean and with it, getting more weight behind the shot. I've started to conscientiously think to lean over from the waist, especially on the reachback. If u watch videos of the good players driving, u will almost see this move, although it can be subtle. About the best example is Ken Climo.