I did a couple last weekend at 300 +/- 10 degrees with the simply marvelous sweet seduction rub. I'm not sure what type of sweetener they use, but I wrapped in butcher paper once they hit 160 degrees and before the stall. Didn't have any issues with burnt sugar and they came out great.
WSM 22 ~ WSM 18 ~ Maverick ET-732 ~ Flaming Fast Thermapen ~ Weber SS Performer ~ Weber 22 OTS ~ Weber 22 OTS ~ Weber 22 OTPlus ~ Weber 22 OTS ~ Weber Q300
When all else fails just ask yourself, WWGALD???