Two lines facing eachother with enough space for two berkleys. Initial thrower starts on the side.
Thrower throws the "dump", and goes directly to the opposite sideline.
While still moving, the next give-n-go happens.
Followed by a completion up-line.
And then starting over on the opposite side.
Backhands are preferable, but when people are comfortable they can try flicks too.
And back to the starting position, continuing from there.