I do wings entirely in Zone 4 (the indirect side) on a well-greased seafood grill grate (see link at bottom). They turn out great -- click on the photo for a hi-res view:
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The recipe:
• Preheat PG500 to 425º
• Rub wings with peanut oil, and liberally sprinkle with salt, pepper, and paprika.
• Roast in Zone 4 until brown (about 30 minutes), then flip.
• Roast on the other side until brown, and internal temp is 190-200º.
• Remove wings, dial oven down to 250º, glaze the wings, place in a roasting pan, then return to oven a few minutes to set the glaze.
The Glaze:
• 3 tbsp soy sauce
• 3 tbsp sriracha
• 1 ½ tbsp oriental rice vinegar
• 2 tsp sesame oil
• 1 tsp garlic powder and 1 tsp powdered ginger (or more, to taste)
Seafood grate:
http://www.cookshack.com/store/Accessories/PV018-Seafood-Grill-Models-SM160-360