Even numbers behind 4 stations at a 8m diamond. There are 2 intersecting lanes, one lane (B and D) has ball at each end.
2 balls travel in opposite directions from (B - D) and (D - B). Intersecting lane (A - C) has 2 link players leading and helping the ball travels it's course
First ball travels circuit (B to D), via (A)
Second ball travels mirrored circuit (D to B), via (C)
(A & C) start in unison and run to centre. Both receive from the left, pass to the right.
After passing, (A) joins (C) and vice versa
(B & D) move to the end of their current station
After about 90-120 seconds, switch the lane with the balls and restart
Now the ball travels between (A & C)
