Thanks for the info TerryW,
I thought bucket companies were frowned upon by the ATO by the previous comment by Hillview: "Just be wary that if you are operating from disc trust then distributing to a bucket company and not actually paying the money can be an issue from the ATO's point of view. They are right on this at the moment."
So your suggestion is to have a discretionary trust distributing to a bucket company, with the two individuals being the 'shareholders'.
I don't want to stray into useless newbie questions, but in the case of shareholders, how does one associate the two individuals as the shareholders of the bucket company? It surely doesn't have to be a publicly listed company?