I just read Darvas' classic book How I Made $2,000,000 in the Stock Market. In it he puts forth what worked for him; to buy on strength, put a close stop below and then it either stops out or it goes your way. Don't grab a quick profit too soon, but rather follow the price with a protective trailing stop. Though he was not day trading, his ideas seem to make sense. Furthermore, it seems that while one could enter a trade and get stopped out at anytime during the trading day, the earlier a trade was begun the more time left in the day, and therefore the more pportunity to enjoy any gain in your position, having already taken the set risk of x points to begin the trade. I was wondering whether any of you day traders in the indices have experimented with placing a time limit, an hour of the day after which you will not begin a trade?