Bah, ok I'm kind of spamming now but I am back reading through Journal 1 and actually just came across this quote:
It's on page 186:
http://www.elitetrader.com/vb/showthread.php?s=&threadid=38777&perpage=6&pagenumber=186
So maybe it is LBDU before 11:30, after all...
Edit: (removed another ref to LBDU)
Our system generated three possible trade signals from the list of five Dry Up Stocks when actual volume exceeded calculated "Low Band" Dry Up Volume prior to 11:30 AM.
It's on page 186:
http://www.elitetrader.com/vb/showthread.php?s=&threadid=38777&perpage=6&pagenumber=186
So maybe it is LBDU before 11:30, after all...
Edit: (removed another ref to LBDU)
Using Jack's theory, the key of the game is "exponential", not the "rate" of the return.