Set up in vertical stack. - Stack try to set slightly nearer to the handlers than usual as you're aiming to hit the endzone with a huck.
In this first variation, let's assume the disc is forced to the sideline (force forehand in this case) - FOS will be going deep. To do so, you want to cut to the breakside first (away from your marker)
Once 3 hits the breakside, turn around and strike deep. - At this point, the handler can put it anywhere into space. *Why should you cut to the break side first instead of immediately going deep? - If you immediately go deep, you risk your opponents calling a pick on you.
Now let's see if it's a force middle.
Same cut