HokieBGE, I have done this several times. I start out doing the 3,1,1 method but there are changes. I start with about 5- 6 full racks. I set up a indirect cook, the racks on their edges and use a dome temp of 250, no less no more. I let them go for 3 hours, I then remove them to a 3-4 deep alum pan, I cut the full racks in half at this point. I cover the ribs lightly with the "sauce of the day" or what ever you will use at the end. Not too much as you don’t want to over do and steam the ribs. I then put the covered alum pans in the a Direct Egg setup and rotate top to bottom every 15 minutes to keep the ribs from burning, for an hour or so. I remove the covered pans and let them rest on the counter for about an hour. Next into the refrigerator they go till the day of grilling. On that day of grilling I set the house oven to 175 and just warm the ribs up for about an hour or less, just enough so the harden fat melts. Transport these to your final grilling spot. Now the ribs are ready for the final grilling and saucing. Just grill and sauce the ribs as needed. Like I said I have done this before and days ahead, the most I did were 18 racks over 3 days.Terry