There's no right or wrong answer to this question - it really depends on your personal preferences. Some people like to boil their wings before grilling, as it can help create a crispier skin. Others prefer not to boil them, as they feel it makes the wings more dried out. Boiling the wings also has the added benefit that they won't need to stay on the grill too long. However, boiling before grilling makes it harder for the marinade to penetrate the cooked chicken meat and can increase your chances of the wings overcooking and drying out. I prefer to grill my Korean BBQ chicken wings that way the juices are locked in and they're always juicy, sticky, and delicious.