Canceling a dash in progress by dashing in the opposite direction repeatedly, kicking up dust to both sides while dancing back and forth. Tap the control stick left and right quickly, making sure to snap the stick all the way each time.
This movement creates uncertainty in opponents about when aggressive movement will occur. This makes it harder to peg where you’ll be if they try to move in, and allows you to naturally transition anytime into running toward or away from skirmishes.
A dash dance variant involves dashing directly at someone, then canceling the dash with a backward dodge roll. The goal here is to coax out a big whiffed reactionary move from the opponent, which might then be punishable. (Regular dash-dancing can coax out punishable moves too but lacks the intangibility of a backward roll.)