Sit-on-top kayaks are a popular alternative to traditional sit-inside kayaks. One advantage is that they sometimes come with a foot pedals for propulsion. The foot pedals are linked, via gears, either to a propeller or to flippers. This leaves the hands free for activities like fishing or photography. Of course, such kayaks can also be "arm powered" via paddles in the conventional sense.
Given the same boat (for a fair comparison), how does pedal-power compare with paddle-power, for speed and endurance? Also, how feasible is it to combine both means of propulsion, simultaneously.
There are many videos out there comparing pedal kayak and paddle kayak regarding price, weight, maneuverability and draft (and this is not about those aspects), but those comparing speed and endurance are few and contradictory.