So, to say this another way, all those hundreds of indicators that people have made are probably quite pointless, because there's no statistically sound way to prove them? I guess people are attracted to the hocus pocus idea of edge (me too!). Do you submit any stop-loss type orders, or do anything equivalent? Some days, the market moves so much it would be better to close some positions and reopen them the next day. My only other idea was to trade before settle, in order to reduce slippage and get ahead of the other CTAs who are likely to place the same order as me at the next open.