It was actually 6 from 6 Bhagwan, but Chuck seems to have only used the top two in the most favoured column for the whole meeting or something, not the top 2 in each race which is what you suggested.

From my checking, your idea did VERY well in Sydney but not too well in other states. Perhaps you should have a limit on the field size of 8-10 runners. And the 'most recent runner' rule actually deleted a couple of good winners, so I'm not sure.