Not ruling this out, but the other explanation is valid so I have no reason to believe he has the seed. The other explanation is this: He keeps playing until he's up a certain percentage, then stops. It seems to have worked well so far, but as we all know, this is playing with fire and he might come into a situation where he has to take even higher risk and maybe has to stop when he's down a lot because his funds are drained.

Has his "chart" been posted somehwere?