I think it's worth homing in on handicap races if you're looking for winners at longer odds or to lay favourites.
A popular system was one which backed all horses tipped as NAPS in handicap races with 8-12 runners at odds of 5 or more. We're not going to be able to determine NAPS selections in BFBotManager, though there may be something else we can use to filter out those winners.
There are several strategies which focus on all weather racing tracks - these are: Lingfield, Southwell, Wolverhampton, Kempton and Chelmsford City. These tracks should eliminate a lot of the uncertainty caused by rain, snow, frost etc.
In the bulk of all types of races the top 4 horses tend to win most of the time, so really long odds aren't seen to be winning that often. Hmmm - I wonder what the odds are like for laying Fave 5?
If you need some stats of UK horse race prices to review, you can use this site which is really useful:
I see that the place market stats are included too - could there be any value in backing several horses for lower odds?