I have a system with 8 simple rules that produces 36% POT for Melbourne Metro races only over a 7 year period.

Would you see this as a big negative that it works only in Melbounre and not in other states.

For The record:
WA (13%)
SA (17%)
VIC 36%
NSW (25%)
QLD (12%)

Last year was the first year I used real $$$ and returned the following stats:

Sel 112 Win 16 Plc 48 POT 65% (Win) 14% (Plc)

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Stix
.......Giddy Up..... !!