I can see where this is heading. By the time it's over, someone will have chartered an FT flight that somehow still earns miles....
I seem to recall on the Barra Do, we had flights which were 90% FT - we might have even managed 100% on the outbound flight, or there was one person in the plane who wasn't an FTer (excluding pilot and co-pilot).
But since the plane was a Twin Otter, it only took around 18 - but still very nice to have it to ourselves