True, but as someone else posted, you can borrow up to five hours out of your bank (going negative, if needed) in order to help get your credit towards the gs trigger.

Most importantly, green slip accounting is not done until the month has concluded. So, you could drop everything, have a line value of zero (I know several guys who do this, though it is somewhat rare) fly a GS as your first trip of the month, and so long as you white slip, swapboard pickup etc, the rest of your flying up to the gs trigger, it will still pay double.

Or as one captain told me, "now that I got a green slip, I need to get a white slip to protect the green slip!"