Cathay availability is disgracefully erratic: coming and going all over the place. JL shows the most accurate for USDM and AA. QF seems to have a lot more than they do. I'd set an ExpertFlyer availability alert for the flight you want and jump on it when availability pops up.
I'm pretty flexible with flights and dates, I think you have to be for any sort of award travel.
Say I'm happy to travel any day in March 1st-31st inclusive on any of the four daily flights on CX from HKG-JFK. Each of these are on the 77W (one is via YVR, the others direct) and each have F. How exactly does this work on EF ? Can I set up some sort of blanket alert to cover these destinations and dates ? Or am I going to have to set up 31*4 = 124 alerts lol ?