You correct and that is a weakness in my staking method that I really need to think about, maybe. On stock/indices I use 3% (spread plus stop) risk on the open to calculate the price per point, I could contrive something along those lines. Anyway, as far as horses are concerned I am very risk averse.
You mention that you took out the purchase price, not quite following you there, I got a 30 day free trial and then pay just under £20 per week. We are talking about racing to win aren't we? Or are you a Brimadon client?

Regarding yesterday it was an unfortunate day, using my method I literally broke even.

Regarding arbs, you are right it is difficult to make any decent money and constructing the arb is far from easy. I am still playing with minimum stake to test.

BTW, how does one quote a message in the reply? My "options", "Quote message in reply" does not work.

Cheers
Dave