Finally, I can share my method.

1. Start with the side of the towel that has the tag. Hold the towel so the tag is facing away from you (critical to a later step!)
2. Dry hair with the top, then face in the next section down, followed by chest.
3. Left arm is dried with the left side of the next section, right arm with the right side. At this point you should be about half way down the towel.
4. Dry balls with the next section.
5. Legs are next with the remaining section of the towel.
6. Flip and dry the back and butt.

I got tired of finding head hair in my underwear so this method keeps the head drying section quite a bit away from the ball section, and keeps the ass drying away from hands arms, chest, face etc.