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保龄球都开有放进中指、无名指和拇指的三个指孔(见图1)而根据所开指孔的不同和手指插入的深浅又分为三种方法:惯例球这种球适合一般人使用,可以把拇指插入至根部,中指、无名指则可以插至第二关节,所投出的球最平稳。保龄球场的球大多属于这种类型(见图2)。半指球拇指插入至根部,而中指与无名指插入至第一关节与第二关节之间。这种球比惯例球容易回转,所以威力很大,变化也多,但也不容易控制,要经常练习,才能运用自如,得心应手(见图3)。指球拇指插入至根部,而中指与无名指只插入至第一关节。这种球,投出去的变化最多(见图4)。初学者在投球时往往发生球太早离手或手指抽不出来的情况,其原因大都是指穴不够使用。选择指穴,主要是将大拇指完全放进拇指穴试转,感觉不太松或不太紧即可。抓球的时候,通常最理想的抓法是把手指插入指孔里
Bowling is open into the middle finger, ring finger and thumb three finger hole (see Figure 1) and according to the difference between the open finger and the depth of finger insertion is divided into three methods: Conventional ball This ball is suitable for most people to use, The thumb can be inserted into the root, middle finger, ring finger can be inserted into the second joint, the ball cast the most stable. Bowling bowls mostly belong to this type of ball (see Figure 2). Half finger ball thumb inserted into the root, while the middle finger and ring finger inserted between the first joint and the second joint. The ball is easier to turn than the convention ball, so it is very powerful and has many changes, but it is not easy to control. Practice it frequently to get comfortable and handy (see Figure 3). Refers to the ball thumb inserted into the root, while the middle finger and ring finger only inserted into the first joint. This kind of ball, cast out the most changes (see Figure 4). Beginners tend to ball when the ball is too early to leave or finger pumping out the situation, mostly because of inadequate use of the point. Choice refers to the point, the thumb is mainly fully into the thumb hole try, I feel not too loose or not too tight. When catching the ball, it is often best to insert your finger into the finger hole