I'll also make the point that it wasn't required for the whole aircraft to be taken by just one charterer, there were often multiple affinity groups on board. Commonly on Wardair there would be a UK group and a Canadian group. I recall a Capitol salesman who said it was an issue to get the numbers each group wanted balanced to the 250-seat capacity of the DC8-63, you might manage 230 across say four groups but that would be most of the profit gone.