Question for Charlie regarding warm-up 2

I would definitely not do full starts till the meet- why aggrivate it beforehand? The MB drill I describe has the ball held to the chest like a chest pass drill and you drop forward with your feet in the blocks and drive forward, pushing the ball out pretty much horizontally as you leave the blocks, landing flat on the mat. (it looks much like the MB drills launching over the HJ pit in the GPP download