Hi Tim - I've followed it for a long time, mostly riding it from the dollar range and got out when it was picked as a top stock by a newsletter, which propelled it into the teens.
I got back in, essentially long, the past few months by writing one month puts and capturing some of the huge premium caused by the huge price swings.
I was wrong on the direction of the stock but the premiums have actually given me a profit.
I decided to go straight long last week when it hit the 2.50 range. 3.50-4 I agree seems to be the next test.
Best of luck with it.