Thought I'd just post my conclusion here for benefit of others.
I ended up using a flexible Waste Pipe Joiner from Bunnings for $10: http://www.bunnings.com.au/connector-wa ... u_p4760802
This…

I tried painting my bathtub with Rust-Oleum Tub & Tile Refinishing Kit from Masters. It was a disaster. I took a hammer at the tub. Now it's…