You must make money in the end but are you day trading and covering on the dips? Otherwise I can't see how you are possibly making money by shorting this stock. Be careful on this one. It is the real deal. I would cover and short one of the many scams out there. This is not one of them.
That little dip toward the end of yesterday's session was caused by someone selling about 18,000 shares into the market suddenly. If someone was trying to precipitate a panic, they failed. By the time another 18,000 shares had traded, the stock was right back up. And a few more shorts had taken the bait. (viz "TIMBERRRR!").