My last few babies were all high till late pregnancy, which I think is common once you have had a few babies. One thing I did differently with my last was bind my belly. I started @ 34-35 weeks and wore the binding during the day. I would do my excersizes to make sure the baby was in a good position and after I was done, I'd bind my belly. He was in a fantastic position for birth and I had a very easy labor.
http://www.midwiferytoday.com/articles/transcript.asp
"The rebozo is also used in the midwife's bag. It is a piece of cloth that can be used to wrap around a woman's belly. The woman who's had many babies and has a big belly that falls out onto her lap, well, usually the baby is not well aligned in her body. Actually, she may have contractions and have labor for a long time. Even though she's had babies, baby can't come out because baby's resting outside. It's just out there on the bed or out there in the air, and you need to bring that baby back into her body. The rebozo is a very convenient way of doing it. What I've done is lay the woman down and have gravity pull the baby back inside her, and then I tighten the rebozo around, with the knot on the side, so that she cannot feel the knot if she's leaning. And I just make it nice and tight, usually as tight as I can, because the belly is a huge weight. Then she can get up and have the baby once the baby has fallen back into place. [it positions the baby back over the cervix to help it dilate in labor."