Setup the wall. Mark on the disc, sidewalls a step back. Don't let anything through the wall.
If the disc moves in the middle portion of field, keep the wall together
When the disc gets to a sideline, sidewall calls their mark. Middle now plays of them letting nothing in between. Other sidewall prevents the skip pass to the far handler. Sideline wing takes away any OI crap.
Stop these plays, wall can't recover from skip passes
We're OK with the short passes
On a short pass the wall reforms, taking away the upfield throws and allowing the swings
Because the wings get the D's on the swings
You can optionally put a sideline trap to switch things up or use the wind (any type of trap)