Jason Ball possibly hte best pick up of ruckmen ever, see 2005 finals, especially the Geelong gameAnd hence why Paul Roos's strategy was to look to pick up a ruckman who had been developing on someone's list for 4 or so years. He was happy to give away a 2nd round pick for a developed ruckman rather than waste an early pick on a player who would not provide any / very little return for 4 - 5 years.