If you visualize you got your feet around shoulder width apart, you got three opponents around you, one in the centre of your legs facing you ,one by your right shoulder one by your left shoulder. If you know what stance you are in without moving your legs by simply just turning the hips and shoulders and replacing the lead hand with the rear hand as you face each opponent only slighlty adjusting the feet for when you end up in south or natural on each outer opponent.You should be able to work out very fast what the benifits and the openings are on each man and on your self.

So to tranfer that knowledge into a single fight with one man moving around you, should help you to know when you can get away with square and when you cant, also how to shift in and out with ecconomy of movment and when it pays to be able to attack equally with two hands and when it doesn't pay.