Skipping reinforces sprinting and jumping, trains the explosiveness. 
Stand with one leg slightly forward.
Execute a step-hop pattern of right-right-step to left-left-step to right-right-step, and so on.
Perform fast skipping by maintaining close contact with the ground and eliminating air time. Perform this sequence at as fast a rhythm as possible, driving the lead leg toes up, the knee forward and upward, and keeping the heel up under the hips.
Do not emphasize stride distances. Focus on maximum thigh extension, recovery, and frequency.