Until such time as manufacture of the balls specified by the Two Ball and Delta rules exists, the rules provide that common playground balls may be used in place of regulation balls. In fact the Two Ball and Delta ball, as specified, is based on an actual playground ball of a size to fit in my own open hand, gripped without permitting me to close my hand on it. Players should confidently hold, carry, catch, grab, or throw the ball with a single hand, yet without so sure a grip as to preclude experiencing some risk of losing control of the ball, dropping it, or having it grabbed away. The balls are scaled for player stature.
•Are the ball sizes correct to meet their intended usage in play?
I have had feedback suggesting that the Two Ball and Delta fields are too big. The full sized fields are 100 metres long but the goals are only 50 metres apart. Scaled fields are reduced to suit player stature. I have set field dimensions quite deliberately to encourage open action during play while reducing the possibility of balls out of play. The most intense action should occur near or along the centre lines while mid field action towards the sides of the fields or in back fields would be more strategic.
•Are the fields too large?