Originally Posted by lydanynom
I don't think you want the belly out of the sail. At least, I have been easing outhaul, cunningham and backstay as I turn downwind, and only keeping enough vang on to hold the boom down without putting tons of tension on the leech.
New as well but...
Ease the cunningham, outhaul and halyard when running. You want the sail as "full" as possible to "catch" as much air as you can. Use the vang to take the twist out.