In case anyone missed it when I said it a few days ago, the contest works like this. Every day during the contest, a certain time will be randomly selected, and the first person to enter a code after that time will win. There are approximately twelve of these randomly-selected times every day. So, there's no way to gain the upper hand, since it's random.
Well, no, not really. I have a theory. Only so many people will be entering with the codes they get from boxes each day right? The rest are all like us, using the code that's emailed... most likely as soon as possible. So, in theory, the later in the day it is, the less people are entering... right? That means that the later in the day it is before midnight, the more likely you are to be the first to enter a code after the winning period. I'm going to put this theory into practice starting tomorrow.