statistics: From 01/01/2005 to today 03/10/2006, 455 trading days:
Average Daily High - Daily Low:
EURUSD : 104 pips
Case 1, 216 trading days over 100 pips: 47.5%
Case 2, 94 trading days between 80 to 100 pips: 20.66%
Case 3, 107 trading days between 60 to 80 pips: 23.52%
Case 4, 42 trading days less than 60 pips: 9.23%
You could get about 80% of win on Case 1, 70% of win on Case 2, 55% of win on Case 3, 10% of win on Case 4. So total win odds is arround: 66%
Pretty good

, I think just use simple method 1, don't need setup reverse order after. just take 30 pips of 66% trading days, and stoploos 50 pips of 33% trading days is good enough. That is a possibility to
generate about 1000 pips per year per currency pair. And another beauty of this statistics is there is only once happened continuous 4 days less than 80 pips for last 2 years. That means we can use MM and odds to take more profit. for example double order lots after 3 continuous days less 80 pips.
Simple logic can make more money
I will make one EA to test this stratage.