Here's a Place system which hopefully someone with an appropriate data bank might wish to have a look at:

The rules are:
1 ) Sole 100-pointer on Unitab rankings.
2 ) Unplaced at last two starts.

I have had a look at racing since last Saturday applying these rules and the results are:

Saturday 10 Nov.
Flemington R9 no.11 - $3.30
Townsville R1 no.5 - $2.30
Townsville R2 no.14 - $2.90
Geelong R8 no.3 - $0.00
Morphetville R3 no.6 - $1.80
Morphetville R5 no.8 - $2.10
Ascot R5 no.8 - $0.00
Ascot R9 no.4- $0.00

Sunday.
Donald R8 no.13 - $3.20
Donald R4 no.1 - $1.70
Cranbourne R2 no.7 - $1.50
Mt Barker R2 no.3 - $0.00
Mt Barker R3 no.4 - $0.00
Mt Barker R4 no.7 - $0.00
Devenport R1 no.4 - $1.90
Devenport R3 no.2 - $2.00
Devenport R4 no.3 - $2.60

Monday.
Casterton R7 no.1 - $1.80
Casterton R8 no.1 - $0.00

Tuesday
Seymour R4 no.13 - $1.70.

By my reckoning, there were 20 selections for 13 placegetters for a return (unitab divvies) of $28.80. Interestingly, there were 5 selections from W. Aust and all were unplaced.

There were also 5 winners paying a total of $25.20.