RE: Aussie Travellers
Well I was doing pretty much the same thing Rebel, but not for as long, on the Warwickshire Ring and Grand Union canal in the UK. Yes, there's something compulsorily relaxing about being only able to travel at 4 mph max, isn't there...?
We didn't encounter a viaduct, but did a lot of locks and a mile and a half tunnel in stygian darkness is a 'different' and weird thing to do, compared to our usual boating experience.* Glad we did it though.