I foiled ribs for the first time on my last cook and was not fully satisfied with the results. I usually cook at 225-250 for about 6 hours in a WSM with a decent rub and that's it. I don't sauce either. I often sauce when I reheat them and I always serve with sauce for those who prefer it, but many like the ribs just the way they come off the smoker.
Neither do I mop. I like to close the smoker and keep it that way until they ribs are done.
Give it a try!