IN RECENT YEARS A UNIFIED PICTURE OFULTRALUMINOUS X-RAY SOURCES HAS BEEN DERIVED FROM ITS SPECTRAL PROPERTIES. IN THIS MODEL THE HARDEST MOST LUMINOUS ULXS ARE OBSERVED FACE-ON REVEALING THE HOTTEST PART OF THE SUPER-EDDINGTON ACCRETION FLOW WHILE SOFTER LESS-LUMINOUS ULXS THAT SHOW EVIDENCE FOR ULTRAFAST OUTFLOWS ARE OBSERVED AT LARGER INCLINATIONS. IF THIS UNIFICATION MODEL IS CORRECT IT SHOULD HAVE OBSERVABLE IMPLICATIONS ON THE LONG TERM VARIABILITY OFULXS AS THE EDGE-ON SYSTEMS SHOULD SHOW MORE VARIABILITY DUE TO CLUMPY MATERIAL ALONG THE LINE OF SIGHT. IN THIS PROPOSAL WE AIM TO TEST THIS MODEL BY MONITORING THE WELL-KNOWN ULX NGC 6946 X-1 WHICH ACCORDING TO THE UNIFIED PICTURE IS VIEWED AT HIGHER INCLINATIONS. NGC 6946 X-1 IS AN IDEAL TARGET BECAUSE WHILE LITTLE IS KNOWN ABOUT ITS LONG-TERM VARIABILITY THUS FAR IT IS ONE OF THE MOST HIGHLY VARIABLE ULTRALUMINOUS X-RAY SOURCES ON SHORT TIMESCALES. WE REQUEST 1 KS MONITORING EVERY 5 DAYS THROUGHOUT CYCLE 14 FOR A TOTAL OF73~KS.