Have been doing a quick analysis of favourites over the last 12 months and found the following based on my data which is Wednesday, Sunday, Saturday metropolitan everywhere.

All favs: 31.9% strike rate resulting in a 13.4% loss on turnover
Odds on favs: 50.7% S/R for 16.2%lot.

All favs first up after spell or first start in race:
27% S/R for 30% lot
Odds on favs first up or first start:
35.4% S/R for 46% lot (admittedly only 50 such favs in this sample)

Backing every favourite which was not first up and won last start by at least 1.8 lengths resulted in a 46% S/R and 10% pot over 340 bets.(longest run of outs 7 once followed by 5 twice)


Any other ideas?