Very handy, nice and fun. Waterbus is actually public transport. So check in and check out with a public transport card. In our long tour it saves 20 km of cycling and with a long route against wind, it is very pleasant.
The water bus between Rotterdam and Dordrecht or the water bus from Kinderdijk to Rotterdam is very practical and an adventure trip. It's always fun and sometimes it shortens the cycling route a lot! Especially if you have a headwind on the way back 🌬