I recommend Boyle's book because it's got good material on Plyos, but also touches on every aspect of PT for sports. He may change his schtick every so often, but you're not growing if you don't. And even if it's primarily for sales, Boyle is still among the most highly respected names in the field.
The reading may be a little heavy at first, but you're not gonna get quality information at a 5th grade reading level.
I've ordered Ross Enamait's book "Never Gymless" and should have it in 7-10 days from now. If anyone got any questions about it feel free to PM me in a week or two once i've read it.