I think that without the ability to raise uke's center the waza described becomes a timing exercise. In other words, if you can not connect with uke's center in a way that steals their power, and that takes their balance upwards first (before the 'duck under'), your sucsess is dependant on timing the throw to such a precision that the throw becomes not very practical.
However, if you can raise uke just like in kokyu ho dosa keiko, where you absorb their power to push into you, and raise their center before throwing, then you can find ways to really use this throw. Lot's to practice.
If you want to base this throw more on timing, try using it as the 3rd or 4th throw in jiyu waza...after you've pounded uke a bit
enter early offering the hands before they settle their weight...then just keep entering with the arms doing an omega sign lifting them up slightly, then drop and let them ride the wave.