Very good point, "red"-this is what I was getting at...that there is a determinable effect on the horse's final performance/rating.
Thanks for the input.

G'day Rain Lover,

Thanks for your opinion. However, do you not think that barrier positions at some courses can have an extremely detrimental effect on a horses performance, if drawn wid?. Especially in those courses that have chute starts and others where there is a turn about 200-400 metres after the start.
I invest every day, not only on city tracks but a lot of country and provincial tracks and many have such lay-outs, and I monitor this factor in my form study in an attempt to "get an edge" on the general betting public.
After rain, some tracks have quagmire conditions near the rails after a few races. If your selection was in the inside barriers later in the day wouldn't you reconsider your investment?