Disc starts on sideline. D is forcing middle of the field.
FIRST LOOK: Swing the disc to the middle. Middle handler should try to get some separation and stay in the middle of the field for an easy swing.
If swing isn't there, middle handler cuts straight behind the disc for the dump. Far side handler drifts towards the middle of the field for support.
If (2) can't get the disc, he/she clears out and (3) comes back for the dump.