I suggest you pole mount your speakers behind you, that way, the dancers have to get through you before they get to the speakers!

If the stands are black, you might also try getting some white tape (or paint) and doing a barber-pole stripe up each leg. It makes it a LOT easier to see. Most people that stumble over your gear will tell you 'I just didn't see it'...

You put speakers on the floor, and the minute anyone dances in front of you, there goes the sound...