Can the 8 meter 1 fishing rod plunge by itself?

Can plunge. 8 meter 1 fishing rod is able to plunge by itself when using a rod made of carbon light material. Eight meters one fishing rod, is fishing rod for big fish, used in large water surface fishing big fish use, to choose such a long fishing rod, in addition to focus on the quality of the rod, but also focus on the weight and hardness of the rod.