Just thought I would mention it is important to have a long length of time vs a lot of selections.

I am currently testing a system that has had over 896 bets this week (thats not a typo and its not a laying system). It is showing a profit of 34% for the win and 3% for the place. It is also showing a strike rate of 26% for the win and 51% for the place.

But there is no way I would trial this with real money despite the large number of bets. It needs to be tested over at least 6 months to a year before you could be confident in the method.

I have another system which I have tested over a much longer time frame and it has only had 104 bets this year. It is up 60% for the win and 32% for the place with a strike rate of 29% for the win and 61% for the place. I have tested this over years of data and it works consistently over most time frames. The testing data for this was just under 600 races but it encompased 2 years of data.

I am much more confident in the second system then I am the first system even though it has had a lot less bets in the test period (896 vs <600).

Good Luck.