churn-ging
'For example, when you throw a straight punch with your right hand and your opponent has moved off to your blind side, he will most likely attack either your ribs or your head because those are the exposed areas. So you would then turn to the right and do a scissors gaun sao to cover up the area from your waist up to your head because you don't know where he is going to attack. Then you can use your contact reflexes to attack.'
if you use your right hand your left should be following it that closely that you don't need to block or are you leaving your right hand out for an etended period(like more than a milli-second is extended)
he shouldn't be able to move his body quicker than you your hands & the fact that your hands are on centre should be enough to cover you seeing as though he will be taking an even longer route around the outside.
the idea of an attack & then having to block to cover because you THINK he is going to attack a vunerable piont doesn't seem to fit ving tsun principles.
it seems to me that there are wasted movements being performed, ie a movement JUST IN CASE.
there is a lot to do with facing & stepping training needed to be done if you feel a need to cover in that way.
vts
[disclaimer- i am about to be rude, antagonistic & terribly offensive- but i love ya's all]