This discounts spares and sends the strong message that they’re not important.
If you are working on keeping your balance or hitting your target or making sure
you follow through, then work on those things. You don’t only keep your balance
or follow through or hit your target on strike shots, do you? Every time you
re-rack a apare you are telling yourself that they are not as important as strikes
shots (when actually they are more important), you can’t make up a missed spare.
The Pros call a missed spare a “hole” and this unacceptable. There are those
people who think they can strike enough to make up a missed spare, but you
never get back that missed count.

A clear plastic device for determining a bowler’s positive axis point. The device
has a series of lines on it, which get matched up to a bowler’s initial track.
When the Armadillo is aligned with the ball track, it points to the bowler’s
axis point.

In Bowling, a pinsetter, was originally a person who would manually reset Bowling pins in their correct position, clear fallen pins, and return ball to the players. Most pinsetters were teenaged boys, and thus pinboy is another name used to describe the job. In 1936 Gottfried Schmidt invented the mechanical pinsetter while with the AMF firm, which largely did away with pinsetting as a manual profession. Many pinsetters are integrated with electronic scoring systems of varying sophistication. While many pinsetters have a manual reset button to use in case the pinsetter does not automatically activate at the correct time, other types have no automatic tracking of the state of the game, and are always manually activated.The design of the machines varies. Several types of bowling make use of different designs for machines due to the different size and shape of the pins and balls.