wayne covered it... sugar and honey in the foil will give you the sweetness, without the "saucy" look. If you like more of a natural finish. Another option - Apple juice spritzing, and a sweet sauce like a 4 Men and a Pig sauce at the end will also give you that type of finish... but you have to ensure your cooker is running a low enough temp not to burn the sugars. I cut my sauce with honey also...
Andy /Smoke on Wheels Competition BBQ - www.smokeonwheels.com