Kirwyn had some interesting insights on dynamic hair.  This was from back in the Poser 5 days or so, but nothing seems to have changed.

He found some ways to avoid using the styling controls.  I'm not really much of a modeller, so I didn't understand exactly what he did, but something about how the mesh is joined and how it's rotated can help control the direction the hair flows without using the styling controls.  Also, he found making the skullcap sit inside the head works well to make the hair lie flat without using the pull down styling controls.  The first few vertices of the hair are not affected by collisions, so this doesn't cause a problem.

Number of Hairs, Tip Width, Root Width, Clumpiness, Kink Strength, Kink Scale, and Kink Delay can be adjusted after running the simulation without screwing it up. "Verts per hair" cannot.  Touch that dial, and you'll have to re-run the sim.