By Bret Kenwell The bull case on the charts is starting to gain momentum. Investors look for reasons to call a stock-market bottom. Investors are scared and traders are anxious, but both are wondering whether the stock market has bottomed. Investors might think that the wide daily and weekly trading ranges are a boon for traders, as they capitalize on massive moves in individual stocks and the indices. Truth is that traders can thrive or die in this type of environment. Those who are careless with risk — failing to use a stop-loss or leaning on hope as a strategy when they’re wrong — can be de…