The vast majority of professional money goes on a second or so before the race actually jumps.

You can see that when pools appear to be growing as the race is being run.

In contrast to HK high rollers are extremely welcome and can bet unrestricted amounts at the last moment. And do so to stop anyone trying to copy them.

Therefore it is impossible to track "smart money".

Also, your posts probably belong in the Betting Systems Forum, rather than here.