Around the time we heard news about Boeing ( BA) that should have hurt the stock, I found a bullish setup in it. The first chart below shows what happened in the shares after the bad news hit. You can see that, after the stock spiked into support, a rather healthy rally followed. To keep it honest here, I'm sad to say that I got stopped out of the Boeing trade before it took off! At least the analysis ended up being valid. This article originally appeared on March 18, 2013, on RealMoney. To read more content like this + see inside Jim Cramer's $3 Million portfolio for FREE Click Here NOW. Now, while I can't guarantee that the same thing will happen with the mess Carnival ( CCL) is currently dealing with -- the stock has dropped on weak guidance -- I can give you some trading parameters to work with here. We'll then need to see whether the stock respects these levels. First, I have to note one big difference in this setup vs. that of Boeing. When I first identified the Boeing trade, the stock had been essentially above the 200-day simple moving average. Carnival is currently below both the 200-day and 50-day SMAs, so it has a little more of an uphill battle if there's any value to the support zones I identify below. In any case, let's take a look at some technical decisions in Carnival. First, I am seeing two standout price cluster zones of support, which I calculate based on prior price swings. The first, between $32.66 and $33.80, is already being tested, and it includes at least nine Fibonacci price relationships. The second zone comes in between $30.97 and $31.79.