I have been bowling as long as I could remember. I remember a time when I used to have to bowl in my socks because my feet were way to small to wear bowling shoes.

I have been in the bowling leagues and have held a 120-130 average.  It may not be the best, but on my own I learned how to throw hookballs.  I used to throw what they like to call backup balls, but when I was taking a bowling class at school, I knew that I needed to improve so I worked at not throwing a backup ball and start throwing a normal type of ball or a hook ball.

Normally when you are first learning to bowl, you learn by not thowing a hook ball, so not everyone knows how to throw until you decide you want to learn or experiment.  What you learn is how to throw a straight ball and you are told that turning your hand is bad.

Once you know how to throw a regular ball its time to learn how to throw a hook ball. What is usually involved is being on the opposite side of the lane as your throwing hand and set the angle. You want your ball to be thrown at. I cannot say the exact angle that you should have it at but if you are throwing right handed you were make sure you ball goes to an arrow on the right side of the lane but also have your ball turning to the left.  You would have to do the opposite for peple whom are left handed.  Angles do vary as lane conditions vary too due to the fact that the lanes may be very oily and others times it could be dry so the exact angle will be up to the bowler.