The Bucket Drill addresses the follow-through phase of the pitching delivery and is a variation of The Knee Drill.
It is a more advanced drill and requires a sufficient amount of leg strength before the drill can be performed properly. If a pitcher can bend over and touch his opposite hand to his opposite foot, and remain balanced throughout the entire process, he is strong enough to perform this drill.
To get into proper position, place the foot of the knee that is on the ground onto a bucket or another elevated object 16- to 24-inches off of the ground. The movement of the arms is the exact same as The Knee Drill.
When the pitch is released, the pitcher will stand up and rotate over the stride leg, bend his back, and bring the throwing-arm elbow past the opposite knee. This should be one, fluid motion.