Method for dropping a cloth from a flying bar. It consists of a bar which attaches to a standard
flying bar, and is able to spin around. The bar has prongs welded to it on which the drop is hung
(drop has grommetted holes in the top which hook onto the prongs). Normally these prongs are
above horizontal, so the drop stays hung. On cue, the pole is rotated so that the prongs point
downwards, and the drop consequently falls.