The way I first learned to throw a hook is by imagining my ball as a clock. When you put your thumb at different positions, the ball hooks more or less. At 12, with your thumb straight up, the ball will go straight, at 9, the ball is going to hook the most.
Usually, you want to find something in between here, about 10 or 11.
Hope that's something close to what you were looking for.
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Righty
High rev rate (400-450 rpm)
Semi-high speed (16-17 mph)
Current Average: 236
For a game based on the principles of science and math, bowling sure does have a bad habit of being illogical.
