Using a rebozo (or a belly support belt, though they tend to be fickle) can help with maternal posture, which can help position baby. Also, by supporting the front of the uterus, it can help shift a baby who is laying "out front" into a more vertical position. I have my husband help me tie mine, and it helps with my SPD. I "pick up" the bottom of my belly, and kind of just roll in in and back. It's a really small movement, and I never push it further than is comfortable. DH unfolds the rebozo and drapes it flat across my belly and hands, and then knots it in the back. I wiggle my hands out, and adjust to make sure everything is comfortable. I've tried multiple belly support belts, but never found one that works as well as a long wide scarf or rebozo.