FiveFrameSwing
Banned
well I learned this the hard way with my DD anyhow , When my DD gets palm up she ends up with a more of a locked elbow and struggles to pronate primarily due to misunderstanding the cue in the first place but after countless hours of trying to figure out on why her elbow would not unlock through release. I changed my cue with her and no longer look for palm up but to have the thumb pointing to the sky at 9:00 that cue does not let her arm get to the point that it does lock out and now is much looser in the arm motion and the pronation is now starting to come much more fluently when I was telling her palm up she tended to actually over ER her upper arm to where her palm could actually almost be facing 1st base. but when she points the thumb to the sky it faces in between 3rd base and to the sky.
The forearm/hand is actually somewhat relaxed going into 9-O'Clock. You shouldn't be trying to muscle a palm-up orientation at 9-O'Clock.
In addition to a semi-relaxed forearm, take note of the accompanying lower body movement ... that's important to the resulting 'lag'.