You simply write a poll question. Some stick, some don't. Usually one of the FTers who has been here awhile will do such a poll in December for YTD results. That'll tell you who made Plat again. Right now, some folks know if they will make it or not based on booked flights. But others, like me, aren't exactly sure.

I'm a Plat-lite, becoming (hopefully) Gold next year. Will take a MR in December to do it.