You work on awareness in the A and B marches (this is all lead leg). You can work on how angles feel in acceleration by changing the load on the runner which reduces speed. You work on in's and out's for relaxation, same with sprint-float-sprint. You also increase the speed and distance the A and B drills are performed. You use a video camera in session as well. There are any number of ways to do this, it's also session that can be of heavy cueing specific aspects of sprinting done at full speed.
