It all depends on your conditions that ur bowling on, as well as the surface of the ball that ur using, I believe.
For instance, with most newer, stronger equipment, a stacked 4x4 layout just gives you a nice strong arc on most conditions. But put this same layout on a urethane ball, on second shift conditions, and ur likely to see that hook/set look that ur asking about. So it just depends....
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Duct tape is like 'The Force'. It has a light side and a dark side, but it still holds the universe together.
Some days you're the bug some days you're the windshield.