6. To lay the clay surface, Roger set down metal poles that span the width of the court every 6 to 8 feet. Then he filled between the poles with 2 inches of clay, screeding off the excess by pulling a straightedge across two poles at a time. Once the entire surface was laid, screeded, and level, Roger took up the poles and filled in the voids. Using a water roller, he gently compacted the clay, working across the width of the court, then down the length twice
to leave a smooth, even surface.