If you spent $1,000 on that card, pay off $999 (or $995) several days, or even weeks, before the statement closes.
My payments are considered paid from the date I submit it online, no? That's how it works with this card of myn but that might be because it's a Chase Freedom and I'm paying from my Chase checking... When I say i constantly use it I mean I'm using 2 days, 1 day, and the very day that the statement closes. I don't think it's possible to know what will clear. If I overpay the statement will close with a negative balance and I don't think that's good either...