Hi Mad,

Getting back on the track of this thread, for something very simple have you tried ranking certain factors to come up with a rating.

For example: 10 horses in a race, best av. prizemoney gets 10, next best gets 9 and so on down the line.
Then add win strike rate ranking and place strike rate ranking.

Sportsman Chartform is good for this.

Pretty simple, easy to calculate.

Good Punting.