David “DJ” Johnston is by far the most experienced coach I’ve ever worked with. He has had the pleasure to work and talk with the likes of Tom Tellez, John Smith and Brooks Johnson. He is most noted for the creation of the "Six-Stride Mark Chart", which deals with the approach run speeds in long jump and pole vault, as well as stride lengths and performance success. With extensive knowledge and experience in Approach Run velocities and accuracies, DJ is a clinician at camps and clinics worldwide. His presentations include the "Physics of Speed" and technical models in the triple jump, pole vault ("19+Plus"), hurdles, high jump ("The Natural High Jump") and 4x100m Relay ("The Timed Method of Establishing a "Go" Mark" and "Fundamentals of the 4x100 Relay Overhand Baton Pass")