The Sao Chui is a powerful strike that cuts through the air in a wide arc.
This means that if improperly used you will inadvertently open up your space to an attack.
So more than ever you must have a good grasp of the fundamentals in order to use Sao Chui.
This is because the wide movement can cause you to lose your balance if you miss.
We also need to look into how to set up the strike quickly and issue power even at a closer range to reduce the striking time.
Because Sao Chui requires a bigger movement this means that you will never be as fast as a linear strike such as the Yum Chui.
So in order to use Sao Chui you will need to investigate how to minimize this weakness.