Combine sugar with salt, pepper, paprika and garlic. Rub onto pork.
You should sear the pork in a hot skillet for 3 to 4 minutes on each side. It will make the pork brown.
With apple juice and mustard inside the packet, pork should be wrapped tightly in double foil.
For 10 minutes, dump hot water into the preheating cooler, then dump the water, wrap the cooler, and place the towel inside the cooler with the pork.
Close the cooler and let it sit for 6-8 hours. It will be much easier to shred. Make sure to keep the cooler closed.