I don't understand.
99% of my betting is on the top 3 of my rated animals as well, yet I have plenty of bets.
Are you saying that your top 3 animals are always over what the bookies are giving?
Unless your system is directly linked to the bookmakers prices, this is not possible.
I set my markets using the form guide.
And I do it a day before the race is run.
You obviously must be doing it 3 minutes before race time.