tc,
I was asked the same thing on the charlie francis forum. Here is the rundown.
Athletes between the ages of 6-20, various sports with many multi-sport, various skill and ability with the majority being average performers in overall performance indices. I typically have them 3-6 months at a time but some for 2-3 years. A little of everything.
My linear speed philosophy is based on improving technique through repetition and coordination of efficient movement patterns in order to apply the maximal amount of force in the least amount of time in the right direction. In addition, focus is given on improving levels of hip mobility. Strength, power and plyometric work is designed to optimize function of the posterior chain as it relates to force production and stiffness in a sprinting pattern. I guess thats it in a nutshell.
Where do you work?