I recommend picking 2 or 3 and playing both directions; even a strong trend day will put in a decent reversal at some point with the momentum stocks. My favorites this year have been AAPL, AMZN and POT, though I mainly trade futures now.
Try to follow about 10 different stocks that usually move up or down a few bucks. But l have no problem going after one like ABV which all of sudden about half way through the day dropped from 112 to 104 .95 in less than 2 mins and then proceeded back up hitting 110. Don