I think the narrow tactic suits Bolton's play. The Right and Left strikers seem to act as Inside Forwards which helps.
The Full Backs (Steinsson, Ricketts and Robinson) Tidy everything up and put balls through the channels.
The Centre Backs (O'Brien, Knight, Cahill and Shittu) play the ball to the defensive midfielder.
The Defensive midfielder (Vidal, Davis, Muamba, Basham) send the ball to either of the Centre Midfielders.
The Centre Midfielders (Muamba, M.Davies, Davis, Vidal, Basham, Holden, Wilshere) Run with the ball and then pass to the Inside Forwards.
The Inside Forwards (Elmander, Folan, K.Davies, Caffa) Cross or shoot.
The striker (K.Davies, Milevskyi) scores!