Ok firstly the basic rules.
1. bet only on favourites to win.
2. If a loss then bet using next multiplier in sequence 2,2,4,16,32,64 then if still a loss restart from multiplier 1 again.
3. The moment a horse wins at a meeting stop betting on that meeting (statistically I may have hit the only fav to win for that meeting, even if its the first race and its a low dividend.
Screenshot of current TAB balance