Stebbo.

I was wondering how many systems you run concurrently ? I understand the logic of it but not sure what you do when two [or more] systems come up with different selections in the same race. Do you still place the bets ?

I have always been a critic of backfitted results mainly because they are done on and include many horses that are no longer raceing [say a new batch every 5yrs.], but more importantly because a lot of sane filters just can't be configured so are replaced with meaningless ones that lead to error. Within 2.5 lengths from winner [as opposed to a finish position, except first of course] is an example that I have just discovered can be checked. What about 'must be no worse than 8th. at the 800m', which establishes being on the pace ?

The whole business of systems is very exciting but I have never had much faith in them. Working out software solutions that fit decent filters seems to have more merit that force fitting filters to suit the software [most systems around].

Cheers.