Rocket Stove powered Pop-Pop Boat

I recently learned about the toy pop-pop boat and thought it was really interesting. After thinking about how it works, I wondered if anyone adapted the concept to a Rocket Stove. It seems like this could be an ultra efficient\clean method of water transportation.

There are efficient and clean technologies already like sail. Rowing. Yulloh. pedal. Windmil. Kite. etc... Inland solar is coming on strong. I have this concept for a boat I call the "platform" which is a boat designed to best use these emerging technologies. A boat that can support a lot of different approaches as opposed to overspecialized in one.

One thought I have on the pop-pop is it is powered and propelled by steam. Is that environmentally friendly boiling the heck out organisms as you pass by?