I have used a Racerate system & back tested their figures & they were correct.

They do stipulate that their figures are correct. they also stipulate, that it does not mean it is guaranteed to work in the future .

What one is paying for is their research based on past results because they don't have results from the future.
They then live test the systems for 1-3 months after that to see if they perform

With that Lay plan Mark, can you say what sort of runners the plan targets .
Can you say what one or two of the rules stipulates?

__________________
Cheers.