I’d love to see a video where Kelly shows how to properly jump when spiking a volleyball.  I’ve been playing for about 20 years and over the past 2 years started getting quad and knee tendon pain.  I bought Supple Leopard and until I saw the section on jumping, I didn’t realize my technique was wrong. I would jump by collapsing my knees together.   From his book, I’m starting to understand the knees out, shins vertical, etc, and this makes sense for blocking a volleyball because it is more like a standing vertical jump.  But I am having a hard time applying this to a volleyball spike approach.  A video demonstration would be awesome. Couldn’t find anything good on youtube