Hi Barny,
When I talk of mechanical systems I,m referring to commercial mechanical systems sold for up to $250.(I have over 600 of these from various sources) and I would say that around 95 % one would come back to the Fav in selected races depending on the criteria of the system rules.
Unfortunately in over 40 years I have yet to see a mechanical system win long term.
For intellectual purposes though I still seek the "Holy Grail" knowing deep in my heart that I,m doomed to fail.
One such system I recently posted on here came 3rd in Australia in a competition a few years ago.(Frankly I quite like it)
Re Ratings - most Rating services depend on profiling each individual horse.A far better proposition that a set of mechanical and possibly flawed rules in my opinion.
Cheers
darky
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