Crash, My main betting is place only level stakes but "this" is another plan which is win bets only, whilst I agree in principle with your comments, and I have tried many combinations including "rule x", but it usually cuts out the bigger priced winners that pop up now and then which keeps the averages worthwhile eg. Big Dam on Saturday.
I suppose I have this "lotto ticket" mentality that I like to be there with a chance of a "biggy" i.e. My idea with target betting using a fixed maximum bank is to then double the target when the bank doubles etc etc with an ultimate goal in mind, this just keeps me interested.

PS. Just for interest I checked back and in 145 Saturdays there has not been one with none of the 6 placed (SO FAR) now thats tempting fate, comes back to the old one "pick em to win back em to place??? maybe the beginnings of a new system there????