For the experience and you get to explore the other side of the town ☺I think they only go from point A to point B to avoid clashing with other boat tours because there's multiple of them
Stayed there. To be honest quite underwhelming. The eel shop Ganso Motoyoshiya, was extremely pricey with even my host saying that the locals wouldn't eat there knowing it was more as a tourist trap. The canals span all over the entire city but to be honest you are better off heading to other hidden gems around Fukuoka or even northwards to Shimonoseki region