So much has been written over many years about "Mechanical" methods of finding long term profits. So can/do they work?

I have long maintained that some may, providing they incorporate "Ratings" as part of the package. Please explain?
Sure, quite simply you would have most of the "general" rules in but then to actually qualify the runner must have something like "must be rated in the top 3 from Cyril's Ratings".

I'll drop a few in here....feel free to join in and share....just some light fun but ya never know...the holy grail may be in the next post....