Of course you should always back yourself. So more power to you if you're winning in this way. At least you get to keep playing :)
> The System, a Channel 4 special in which Brown shared his "100 percent guaranteed" method for winning on the horses, was first shown on 1 February 2008.
> The show was based around the idea that a system could be developed to "guarantee a winner" of horse races. Cameras followed a member of the public, Khadisha, as Brown anonymously sent her correct predictions of five races in a row, before encouraging her to place as much money as she could on the sixth race.
> After Brown had placed a bet of £4,000 of Khadisha's money on a horse in the final race, he explained how "The System" worked. He had started by contacting 7,776 people and split them into six groups, giving each group a different horse. As each race had taken place 5⁄6 of the people had lost and were dropped from the system. Brown had a different person backing each horse in each race, and one individual, Khadisha, won five times in a row.
https://en.wikipedia.org/wiki/List_of_Derren_Brown_shows#Der...
One example where he had a good yield was playing shitty races (there are different tiers of horse races, from fancy ones like the Belmont Stakes to down to older or younger horses) in bad turf conditions. He’d look at what horses scratched and which trainers usually scratched and make different bets as the odds would be screwy and in his favor.
He bought toys with his winnings, and his process was making him a decent buck, at least until he retired and we lost touch.
If casino gambling hadn’t gone mainstream, there would be a lot of interesting activity in throughbred racing — now it’s a legacy backwater sport.
Playing a minimum bet for a long time, then suddenly increasing to the max near the last half of a shoe is a good way to get a casino to ask you to stop playing blackjack.