Do you know how versatile the Acceleration Speed Cord is for your players??
Players can at times, have a hard time identifying how to initiate certain muscle movements, especially if they are upper body dominate hitters. If you attach the speed cord to the front of a players hips it allows the hitter to feel the pull needed to be explosive and quick throughout their hips. If you repeatedly teach a player a skill they will start to identify the necessary movement and initiate it themselves. I know this isn't a huge secret but many players are still initiating their swing through their upper body first.
A big thank you to @jflores1527 on IG for his incredible instruction with his students and sharing that knowledge with us.