The dump swing is one of the most crucial components of the Vert stack.
The dump swing should be executed every time the handler with the disc initiates a dump.
The person setting the stack (3) needs to be aware when the dump (2) is cutting back. When the disc is in thrown to the dump the person setting the stack needs to cut break side for the swing.
The swing....
At this point the back of the stack (7) should cut break side. It is tempting here to cut deep, but it is important to understand what each thrower is capable of. The majority of the time it would be better to make a more horizontal cut break side to catch the throw we know we have