I didn’t have the courage to watch till the end :p:p:p
I have video footage on some drills/plyo/stride here: (Charlie’s low skips included; p.s. I don’t know if this is an ‘official’ drill, but he showed it to me to help me with dorsiflexion!!)
http://www.charliefrancis.com/community/showthread.php?t=23027