Place pork tenderloin in 2-4 quart crock pot, cutting in half lengthwise to fit flat if necessary. In a large bowl or glass measuring cup, whisk together cranberry sauce, sugar, stock, vinegar ...
Put all the belly strips into a slow cooker pot. Cover with the lid and cook on high for 3–3½ hours or until the pork is tender but still holding its shape (no need to add any liquid).
This slow cooker pulled pork recipe is great for feeding a crowd. It's so easy people won't believe how little effort it takes. Get a really good chipotle sauce if you want a bit of heat.