Are you guys on the north side or the south side? We've got an awesome pipe at Kurnell that we use for sliders but we keep breaking the stands or they go missing. Luckily the pipe weighs about 150-200kg so the chances of anyone running away with it are pretty slim.
It's 11m long and with 2 stands you can make it solid enough to carry someone from end to end without bending.
Here's a picture of what we've been doing with it. It lasts forever, this is about 3-4 years ago
If someone helps with the stands I'm happy to provide the pipe, I'm just running out of wood