A pool table carriage for supporting a pool table at an elevated position above a horizontal support structure, and for transporting the pool table between locations without damaging the pool table. The invention also provides a method of operating a water feature comprising at least one vessel containing a volume of water, comprising the steps of causing the or a volume of water to rotate about an axis thereof so as to form a vortex therein and causing the rotating volume of water to vary in height over time. After solvent removal, the cellulose acetate films are peeled from the sacrificial carrier substrate.