Grit lines perpendicular to the initial track = earlier read in the heads with a smoother back end.
Grit lines parallel to the initial track = less read in the front, with a stronger move in the back.
Crosshatch (both of the methods above) most aggressive overall.

You can also try to put the bow tie of the flare straight up in the spinner and then flip it for a different reaction.

If you are supposed to sand either 4 or six sides, doesn't this always leave a cross hatch pattern?  What method do you use to get the sanding lines either perpendicular or parallel to the flare rings, and how many sides are you sanding?