This is a top question you pose Barny. Here's my thoughts.......

I was thinking that maybe we could group these systems and this is what I came up with. ( You've got to do something when there's ************ all races )

I've been down all three of the following roads and I can only make one work. Not knocking the other two, just that I can't make them work.

The three system roads.....

1) Purely mathematics and divvies....maybe Marks' forte? This method is unlikely to suffer over time because dividends by their very nature take all things into account.

2) The approach that maximizes form analysis and then seeks to find best odds to make a profit. This method is subject to the availability of odds and may suffer from competition as punters become better informed.

3) Grail territory. These are the systems that have such an advantage (usually strike rate, less often a repeatable high price concept) that an impressive profit is gleaned whatever the odds available. These little beauties have so much leeway built in that you can look at years of profit with no tweaking.

Time to cook the evening meal now so I'll toddle off. love to hear from those making this game work as to where they fit into the scheme.

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"Not winning on a horse that came first is one thing.....Losing on a horse that didn't come first is something else entirely!!!"