Finally! A workable milky way shot.
2.5 hours of travelling, shooting for 45 minutes, and then another 2.5 hours to get home.
I'm not sure if the site is simply not as dark as when I was there a year ago ("Eudlo"), but it did seem a lot harder to get a workable shot. Potentially this was due to using my Canon 17-40 with an adapter, rather than a native mount lens. Also, at some point I also managed to knock the zoom ring, so it was focused for 17mm but shooting for 19mm....