BJ, good discussion this, now I am a LONG way from being an expert, but as I understand it some of the pre-post markets are formed by BOOKMAKERS, i.e. that's their opinion based on past performance + other factors as to what will be on offer for that race, and of course the bookies do put their money where their opinion is and make a profit of course because the market that they have formed is probably around 125% or so. Remember that a bookie lays horses AND backs horses to arrive at a (hopefully) win win situation over time.

Now I am reliably informed that some publications use a mechanical programme to form the pre-post market, obviously still using past performance, + several other factors, jockeys , breeding etc etc. But in this case their is not a single person's opinion involved, it's a computer.

Think in another way, you know that mechanically picking 1st and 2nd forcast fav will produce the winner 50% of the time. SO, start with this basic requirement, THEN apply your own rules, judgment etc. I'm sure your S/R will increase.

Either way it would be great to emulate Feathers POT wouldn't it?