I briefly touched on my idea that the actual metal shaping isn't the hard part of this, and that the real skill lies in conceiving the shape, in a previous post. I also mentioned that I wanted the seat hump to look like it belonged with the rest of the motorcycle.
Given that the motorcycle is German in origin, and that the Germans aren't renowned for their automotive styling, that seemed to offer a clue as to why I felt that the last attempt at a seat hump didn't float my boat. In short, it lacked Teutonicness.
This is what the first effort looked like. On the whole, not offensive, or even particularly unpleasant I feel, but it doesn't seem to belong to the rest of the motorcycle.