A device and system for propelling a watercraft through water and for fishing. The device includes a shaft that defines a first opening. A blade is coupled to a first end of the shaft, and a handle is coupled to a second end, the handle defining a second opening. A passage is in fluid communication with both the first opening and the second opening. The device may further include an extension element defining a third opening and being slidably disposed within the shaft, movable from a retracted configuration to an extended configuration. The system includes the device and fishing reel releasably engaged with the reel seat. Line from the reel enters the first opening, passes through the shaft, and exits from the second opening. With an extension element, line passes from the reel into the first opening, through the shaft and the extension element, and out the third opening.
