max daily loss is a MUST. I used to give back weeks of profit just because I didnt have a daily loss in place. As for the max gain for a day, I disagree with that one. If you have an edge, it should be put to use whenever the situation occurs. In Market Wizards there was a fund manager that was up 100% on the year and considered booking the year, but a friend convinced him to keep going and he ended up over 400% for the year. Trading is mentally easier when you have already made decent money.