You might have to move! Andre Agassi's dad would only buy a Las Vegas house with a yard big enough to put in a tennis court
I know I'll get tarred and feathered for this one....but don't get your hopes up too high. The hillhouse video is VERY high level. When I first purchased it... I couldn't wait to put it in the DVD player and see what it was all about. It's not quite the recipe book you may be expecting. He does a good job explaining the pitching motion at a very high level, but it's likely not going to be your primary resource for teaching your daughter the very basics. Boardmember's IR in the classroom thread does a great job of defining the very basic motions of the underhand throw. As for the "Too Techy" comment... I disagree. In fact, it's dumbed down to simplest form.... what the arm needs to do to throw the ball underhand. Once your DD can throw the ball underhand, introduce the rest of the pitching motion....which is where Bill's DVD will be helpful.Hillhouse DVD on order!
First of all, I/R is a "motor skill". Whether natural or learned, it is a skill that can either be taught or enhanced by focusing and training the bio-mechanics and physics that cause the motion to occur, in sequence.........
One of the first things that has to happen for a proper I/R delivery, is that the upper arm (bicep) must be trained that it is the stability point for Internal Rotation. It rotates AND stabilizes vertically. It must be properly positioned in close to the body and vertical in order for the forearm to internally rotate on the tightest radius possible. It ALSO must be trained to pass kinetic energy from the proximal to the distal parts of the sequence. IOW.........The energy must be passed from the arm circle, through the upper arm (proximal part), to the forearm (distal part) and down through the wrist into the fingers and ball.
I'm hoping the wrist snaps your DD are being taught are not these: WRIST SNAP DRILL - YouTube Otherwise, the next PC will need to help her unlearn, setting her back and you back in $ lost.
Notice that when they demonstrate the drill, the wrist gets cocked back, palm faces down and the elbow is locked? As they execute the drill, the palm faces forward the entire way through the motion. Now scrub forward to the full motion demo at :28 and this "wrist snap" disappears. During the downswing, you see elbow flexed and pointed down and the palm up all the way down until the elbow contacts the side of the torso, then the lower arm whips loosely through with the hand rotating from palm up to palm facing the torso?