Make the mop sauce for a marinade. Add the V8 juice, cane syrup, apple cider vinegar, Worcestershire sauce, mustard and hot sauce to a saucepan. Whisk together.
Cook over medium heat until mixture comes to a boil, stirring occasionally.
Remove from heat and set aside to cool to room temperature.
Cut spare ribs into thirds.
Place in a gallon size zip top bag.
Pour half of the sauce over the ribs, press the air out of the bag and seal.Turn the bag over several times, coating the ribs. Refrigerate 1 - 4 hours.
Prepare a grill fire to about 350° using pecan or hickory for smoke flavor.
Remove ribs from marinade and place ribs on the grill over indirect heat. Discard marinade.
Cook with the grill closed for about 30 minutes. Brush additional sauce over the ribs.
Continue to cook another 45 minutes to 1 hour.
Check with a digital thermometer, continuing to cook until internal temperature reaches about 190- 200°.
Remove ribs from grill onto a rimmed baking sheet and rest about 10 minutes.
Slice between the rib bones.
Brush with more sauce and serve immediately.