I have been using a BBQ sauce of choice (I like Kraft Honey BBQ), some ranch dressing poured over the chicken, then sprinkle some Lawry's Seasoned Salt on it and add enough water to cover the chicken.  I have a marinading bowl that is like a big square tupperware bowl with a lid that matches the base and it works good for this because with the lid snapped on it can be shook or turned upside down but I found this one at Walmart a couple years ago and haven't been able to find anymore since.