Hey! 82% is not too bad at all, considering no filters. Ok how about the following have been trying to get some number crunching on this one for ages:

(a) Take all horses with form figures 11 (last two runs this time in) MISS its next race, then back it 1 unit win next TWO runs. (Maxi -Divi)

(b) Take all horses with form figures 11 (last two runs this time in) take a 1 unit all up (race to race, Maxi-Divi)) for it's next 3 runs. i.e. looking for the treble when a nag wins 5 in a row, (happens many times every season)