I had both of my boys turn (one breech, one transverse) at the very, very end of pregnancy. (Breech at 37 weeks, tranverse at 41 weeks.) Spinning babies is awesome, especially if you have time to do it for several days, but my experience has been that if you want quicker results, add ice!
Lying with my hips higher than my head with a bag of frozen peas on my BB's head got him turned form breech in about 15 minutes.
With my transverse guy, I had my midwife show me where his head was (my right side) and I put a glove full of ice on his head, but close to my ribs so that to get away from the cold, he HAD to move toward head-down. Then I did deep squats and that took about ten minutes. He was born three hours hours later.