Solar stocks are on the move, and First Solar (FSLR) is leading the charge. Therefore, let's consider a bull put spread trade in FSLR stock.X FSLR stock showed a massive 40% gain last week. We'll look at an option trade to see if we can eke out some more gains, even if First Solar stock doesn't move higher in the next few weeks. That's made possible using a credit spread, and specifically the bull put spread in First Solar.Why A Bull Put Spread Option?As a reminder, a bull put spread starts by selling a put ...