Yes, Mark, a very promising start, and also very encouraging seeing that the strike rate of your top three selections did not deviate from the long term average.

I remember reading in one of Don Scott's books that it is silly to bet the same amount on each horse, particularly when betting multiple horses in the same race, and that the amount wagered should be weighted as per your rating/price even if there's only one horse in a particular race. Going on this, the bookie would therefore prefer you to ignore D.Scott's advice and to bet the same amount on each horse

If the bookie prefers you to bet the same amount on each horse it would therefore be logical for Betfair layers to do the same by laying horses for the same amount.

I wonder how Maria would have fared if she had done this and had also increased her stake proportionate to the day's result just as she actually did after a winning day.

Out of interest, I compared this with your system today - the result/profit was almost identical to yours.

Another observation - as Maria's strike rate was so good I would not be surprised if a more aggressive staking plan would have produced even more phenomenal results. If this is really the case, then you and Angry Pixie might consider a stronger staking plan?