First off, I am a little suprised nobody has replied to this.
Secondly, the only piece of advice I can offer, is when you're searching for boxes, take out the possibility of searching box breaks.
It would look like this:
"SP Authentic Hockey Box -(box break, break, group, group break)"
You would then be able to save it as a search if you wanted to come back to it later and search again without having to add the criteria.
I hope that helps.