I shoot for a dance studio and use a white cotton backdrop that I blow out with a couple of strobes. While I'm pleased with the result of the look of the background, I'm not sure how to light my subject and blow out the area where they are standing. There is the same material on the floor as the backdrop. The floor often comes out grey, as what I expect with a proper exposure of the dancer. I toyed with the idea of something different on the floor to achieve the white, but the studio owner is concerned about about the children slipping on a white panel, for instance. Any suggestions would be greatly appreciated.