As a gift we received two sauce/marinade packets. Each was for two lbs of pork or chicken. I think the brand was Hawaii's Favorite. Shoyu (mostly sweet soy sauce) and Char Siu (pink like Asian BBQ pork). So we gave it a go. skinless, boneless, chicken thighs, cut up. The packets said 30 minutes marinade, but also said the longer the better, we left on overnight. Skewered, then roughly two hours at 225 on the pit. Turned out to be a very easy and tasty meal.
DK
EDIT, note below it's Hawaiian Pride. I found it on Amazon.