Sell when dropping, buy when it starts to rise? You know, it is easy said than done. And this is not how it always work. What if when you see the price dropping, you sell, but as soon after you sell, the price starts to rise fast? What are you going to do then? Again, what if you assume that the price is rising, but after you buy all you see is the price dropping? You can also never know when the price drop will start or when its going to rise. Same goes for finding out the peak rise or dip. I would suggest you to go for "just holding" and sell when you reach your goal.