mickthemiller, looks interesting, rule no. 5 though, is it fixed odds? if so when and where? I've found that with a rule like this you have to have a definite procedure and never alter from it. For example, you could say todays pre-post odds using Tab Form (or whatever) but always from the same source, otherwise you can get distorted data. eg if you're using SP. it could be showing $11.10c just b4 the off ( so no bet) and $10.90c after it has won.