It seems to me that, on your typical crowned house shot, with relatively dry outsides and a puddle in the middle, you create area by "turning it up", applying rotation and revs to the ball at release. The turn allows the ball's reactive coverstock to "read the lane", hook more when there is dry (ball needs help to get back to the pocket), or skid more when it is wet (ball inside of target, needs help to avoid going high).
Think about it this way. If you throw the ball straight, end-over-end, it will always go exactly where you throw it. To allow the oil pattern to guide the ball to the pocket, you must apply turn at release. The more turn you apply, the more you allow the oil pattern to help the ball make course corrections, thereby giving you "area".
At least, that's what I see. Being a no-rev, no-hand stroker, I can only dream about having the area some of my opponents have.
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seadrive
Cogito ergo bowl