When I am swing trading, I am looking for either strong bullish patterns or strong bearish patterns (or the potential for one or the other).
I am not nearly experienced enough to attempt to go long on the way up and short on the way down. I generally am trying to increase my position on the company when it down-ticks.
I don't short often, but when I do everything has to line up just right. Just for kicks, when BAC was dropping steadily awhile back, I shorted it and used that amount to pay off my credit card. LOL
Everybody has to have their own system which works for them. I am just too busy to be swinging more than 12-15 stocks going at once. I'm concerned one will get away from me - and I need to keep my losses in control much more than watch my gains. One good drop can negate 3 good runners.
All The Best
Be careful, most people get burned by penny stocks.