[DangerousA]

As far as skill positions go you can make a small, fast rb-wr-qb a lot stronger way before you can make a big rb-wr-qb faster. In most cases you can get a little more out of each athlete speed wise but you cant coach pure speed.

i beg to differ. coaching speed requires more dedication on the part of the player, but speed is trainable. i've seen players first hand go from 5.0+ 40 times to 4.6 or less. teaching speed is a combination of a few things.
First off hip fleixibility. You would think that technique would come first, but without eing flexible good form isn't really possible.
From there with a good work ethic and dedication to starts and form, speed is extremely coachable.erved: