Besides the larger amount of power required to perform a layout reverse hecht compared to a piked reverse hecht, the main difference between both skills is given by the way the bar is cleared during the flying phase. A true layout hecht clears the bar in a straight or hollow position without exhibiting any obvious hip flex.
The Yurchenko layouts follow the same principles required for all other round-off entry vaults. The hurdle should move up and forward. This gymnast has some problems to refine during her round-off; a round-off flying phase that could be more hollow instead of piked.
Yurchenko layouts are commonly used by competitive gymnasts as warm-ups for more difficult yurchenko vaults involving multiple twists. Take a look at these varied yurchenko timers from different video angles.