If the disc is in the middle, either one of the cup can put a mark. - Assume the left cup goes to mark, she should force towards the other cup. - The other cup's responsibility here is a bit heavy. You will need to cover the downfield crashes and make sure that their handler does not get any upline discs as easy.
We want them to swing the disc to a side. This is where you will trap them (with the court nets as an advantage. Shoutout xinjin!)
Apply a sideline mark. They should not be able to swing the disc easily to the other side. - If you're playing as 1, you're covering any upline cuts from their handlers, as well as making sure they dont get any easy inside break throws. - 4 can come a bit in front (depending on where their cutters are). Trust that your deep will cover your back.
Assume they swing it to the other side..
Set up in the similar manner, but on the other side.
If they try to swing, 2 goes for the callahan sky HAHAHA