It's been my experience that, when asking, many CO gate agents can be very secretive about where one is on the FC waitlist. The fact that it can change at any time seems to be the typical excuse given to me for not wanting to tell me where I am in the list.

I typically don't ask anymore after being turned away for asking several times .... if the upgrade happens for me, it happens. Being only gold now, I typically don't expect it and am just pleasantly surprised when it does.