G'day Gadge, there was also from memory the idea of swapping your Victa (I think it was) to use as your outboard motor. I guess it was a bit too difficult to get the bolts undone every time you wanted to go fishing so the idea didn't last too long. One of the reasons for this wanting machines to be adaptable was in those days small engines were very expensive, the Victa mowers were up in the 50 pound range and back then it was many weeks wages.