That's what's good about Weeklies... They're there IF you need them. I rarely use them but when I do, it feels like a cushion... I try to not use them, just in case I'm under-estimating my measurements... Occasionally, at the end of a day, I'll add 5 points as a sort of cushion, to use up a few weeklies, just in case I need to compensate for measuring incorrectly...