Following in the footsteps of Michaelg and SpeedyBen I thought I'd try a twist on MG's system for laying longshots. Test on only 112 races. Rules: Tattsbet rating less than 90. Must have had 2 prev starts. No DWTC. SP > $10.
Based on $100 liability: 93 bets, no losses for a $281 profit after commission.
Encouraging, so I'll keep building a database of a 1000 races and let you know how it goes. For the Backers, of the 16 horses that passed the rules but had a SP less than $10, 6 won = 37.5% Win sr. You're right Michael about omitting DWTC form, this system would have gone down like the Titanic if I included it.