1 or 2 rows just below the board on either side of the basket.
Make sure there are at least 4 players per row.
Ball is thrown against the board next to the basket and "tipped" into the tide by the next player (catch it two hands and throw it back to the board immediately).
The third player catches this ball again, etcetera.
After the action, a player closes behind the (other) row.
The exercise is finished when a minimum number of successful tips in a row have been achieved (without the ball touching the ground).
Variation:
Players must pass behind the coach before they may rejoin the (other) row.
The coach walks backwards slowly, which means they have to run harder. (This is a must with rows of 6 or more players).
The ball must be both caught and thrown again during 1 jump. (is quite difficult for smaller or weaker players)
Advice:
This can also involve deducting 1 point in the event of a failed tip instead of starting again at zero.