Darky,

I have no idea who Brian B is and I do not dispute your claim of him being "amongst the best and most astute punters in Australia". However I can guarantee you and everyone else reading this, that he certainly wouldn't be backing the above system if he was one of the best.

No successful long-term punter bets any hard mechanical system like your one above. And there is a good reason why they don't, because no hard mechanical system works long-term.