The best (read "worst") posession side I have seen in my early football life was played by Collingwood in 1973. From memory, they finished on top at the end of the H&A season with this style.
Crucially, they played the posession game forward of centre. This is where it really comes unstuck.
Needless to say, when the heat was finally put on them, in the second half of the 1973 preliminary final they got burned.
There's always a core of light running players in such teams (although Freo currrently uses fat sissies in lieu).
If teams want to play, fast, running posession football, they will almost invariably fail in September. It's too hard to maintain in desperate games against similar class opposition. It only takes some sustained pressure to rattle them. And some bully boy tactics- late tackles, fearsome away from the ball shepherds and my personal favourite- the late spoil on the uncontested mark (you've got to hurt him enough that he spills the ball or it's fifty). Andy Kellaway is a genius at this last one.
Your tactics have to be cruel, measured and sustained. You don't brawl with them. They have to want to brawl with you. It's what INSIDE teams do to OUTSIDE teams.
Next time you see a lower class team mauling a light running side which one will you barrack for?
And which one is truly the better Australian football team?
On Neesham's teams- he was banking on using a style that suited the light players available to him at Claremont. It failed but was visionary and influential in its way.