Open-tuck and layout yurchenkos to progressively elevated mats are good drills. The gymnast can add open-tuck twists to the feet and eventually to the back. Gymnasts should not attempt the second somersault until they can consistently land on their back on an elevated surface.
Before an athlete attempts any difficult yurchenko half-turn vault, they must master a consistent round-off half onto elevated mats. Observe in this back view how the half-turn is performed, anchoring the twist from the board. Take a final look at this back view of a yurchenko half-turn timer and notice how these type of skills require an early controlled twist without killing the turnover.