cy you wrote FWIW - If Larry's Hal system works on a 6 month scale as his chart indicates, it could be scaled to work on much smaller, quicker intervals and used for day trading if the data inputs are available on intraday intervals.
answer: (1)Hal(non public) does trade like Zeev's trades and I agree the likely gains are much smaller then Hal(Public) likely gains. (2)My "problem" has been trying to take Hal(non public) day trading system and bring it up to Hal(public) longer term trading system. (3)In fact the Hal(public) may be replaced with $BPCOMPQ SYSTEM in the near future.
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