If it will

help to focus on one spot for aiming, concentrate
on the center of the middle board of the backstop. Staple or
tack an eight inch paper disk there if an actual target is
desired. Paper plates an also be used. After a Ninja learns to
hit this target consistently, he or she should switch to a four
inch paper disk, and then a two inch, and finally a one inch
disk. These can be cut out of colored paper or painted on
newspaper or newsprint with a template and a can of spray
paint. Arrange nine disk targets on the backstop as shown in
Diagram 3.2. This will avoid any chance of the knives
bouncing off each other. A Ninja is ready to move onto a
smaller sized disk target when he or she can place one knife
in each of the nine paper disks.