I would agree with Angel416 about pre-post markets.Sticking to the same p/p source is impotant, as markets all vary against each other and at some times, some will reflect the true state of affairs better than others, but overall,they will all pan out in the wash and come out about equal.

Chopping and changing p/p sources will upset the apple-cart [first 5 = 80% of winners]and usualy, not in our favour.

I believe S/P loses any true view of real value as it is set by the mob and our objective is to step outside the envelope heading for the "undelivered mail" bin.

After selecting 2 from 5 through competant form study, comes the hard part: bet or no bet? If either starts as favourite it's a no bet race, because we are looking for a combined overlay and one selection starting as favorite will usually produce a combined underlay.For this method to be profitable,a combined overall overlay is required. If true value, it's a no bet because we are trying to make a profit and this won't produce it.We will know when we are making all these decisions correctly because we will be " making a profit". This process for me, always seems to be in a constant state of ebb and flow.Knowing when NOT to bet and having the willpower to do so seems to be the crux of profitable punting.