Take two gallon-sized resealable plastic bags, and place four racks of ribs in each bag. Add 1/2 cup Cajun marinade to each bag. Shake each bag until ribs are well coated. Refrigerate for up to 4 hours. Place perforated racks over sheet pans. Remove ribs from marinade, and place them on the racks to drain.
In a deep-fryer or a large, heavy pot, heat the peanut oil to 350°F. Depending on how large your deep fryer or pot is, you may be able to fry up to three racks at a time, or you may only be able to fry one rack at a time. Use care, as you do not want the oil to overflow the pot. Lower the ribs into the hot oil, and cook for 18 to 20 minutes. Maintain the oil temperature at 350°F; do not allow the temperature to climb above that.
Remove ribs from the oil, and drain on paper towels. Cut ribs into servings, place in a bowl, and toss with barbecue sauce to taste.
