It's an old trick Duritz but it might just work.

Shaun, only got figures for West Australia if it helps.
These figures are for horses running in last 42 days, down 5Kg in handicapped weight (no allowances for apprentices) and for Belmont and Ascot (could give other minor tracks but found a lot of hiweight races were stuffing up the figures). Races since 1997 and SP prices for winners.

bets: 838, returned $588, 79 winners, ROI 70%

horses running in the last 14 days
bets: 627, returned $473, 65 winners, ROI 75.5%

horses going UP 5Kg, run in last 42 days
bets: 541, returned $323, 65 winners, ROI 60%

Doesn't look very promising A?

KV