Perhaps a little strange but not beyond the bounds of possibility.
Over 15 years it's (System 2) delivered +/- 25% WSR at AvTab of +/- $3.60 POT -5.5% but all dependant on DSLS.
The problem for the avid punter is the need for patience and the ability to enhance the odds by using BestFluc or Betfair and the tiny, inescapable fact that there have only been 350 to 1200 contenders in the past 15 years (depending on DSLS used). Maybe if used as part of a suite of 'Systems' it just might ......