Also UB is it based on how many races you've done your rating on or how many races you've actually used your ratings on for a system type bet.

For example i've done ratings on almost 2,300 races now but the system only bets on roughly half of these.

I agree my sample size isn't the largest or the best. But its shown a profit in every month since the start. If it was a bung system I would've thought it may have been a bit lumpy or lost a month or two by now.