Have got it sitting in the water properly, top speed about 20m/s, loses power 2 meters above sea level. Technically it can sit balanced on it's end a few ce timetres off the water and fly but apart from sea level, nothing is going to be low enough to pull this off so pretty good result, now got to make it so it can't be used without an oxygen atmosphere. It docks with the sidecar, it can be undocked from around the bike but an engineer would be required to put it back on, though I haven't tested if this is possible yet. Through the work on this I may have worked out how to make a Star Wars speeder bike, but haven't started anything yet.