Retailers have a paradoxical love-hate relationship with their peak season. For most, peak volumes coincide with fourth quarter holiday shopping, when it's not uncommon for 80 percent of the year's orders to come in at once. Scaling a retail operation to process five times its average order capacity is no small feat. For two months of the year, many retailers nearly break their backs to accommodate the seasonal business that will help sustain them through the other ten months. If last year's fourth quarter pushed your business to the brink, now is the time to learn how to build a better inventory plan for 2011.