Bondalucci said..
K-dog, being an ideas man, why not use what is already there?
At Bonbeach there is that yellow wooden post about 100m out.
It's not about to go anywhere and would provide a super stable anchor for a camera.
You could swim out with a hammer, a few nails and a few cross bits of wood to create a bit of a ladder.
Then swim back in, get your camera (which you have pre mounted to a pole), and a roll of gaff tape.
Swim back out, climb your make-shift ladder, gaff tape your camera to the post, pointing in the right direction, and Presto!
"Speilberg's ya uncle"
Seriously though, that post is in a good place to jibe around and also to try a few jump on the way out.
plus, everyone can see where it is from a long way out.-just a thought.
Thats a pretty good idea.
You can also make a telescopic pole with a broomstick handle and some tubing. Attach it permanently and when you paddle out there you can attach the camera on a flymount, extend the pole for height and lock it in place with a nail (predrill a hole in the tube and the point to which you are extending it to.)