One comment to clear up a common misconception.
The "real money" may not get bet directly on the TAB but it sure as hell ends up there. Witness the 1997 Melbourne Cup - Might and Power was showing $8 or $9 on SuperTAB with a few minutes to go and ended up paying $5 after one K. Packer dropped several hundred thou$ on it in the last minute and the bookies offloaded to the tote. It cost me about a thou but cost the bookies a small fortune as they couldn't get rid of all of it.
Late money or big money does not necessarily equal correct or informed money.
Question. If you had a system that was constantly winning large amounts would you be flogging it all over the countryside or would you just quietly bet and WIN.