He didn't bother calling for help on the first day, knowing no one would be around on a Sunday.
On Monday, he knew he had to attract attention. "I had resigned myself to the fact that if they didn't find me on Monday ... they'd be bringing me out in a bag."
O'Neill is determined to return to his rented houseboat.
Mates were already building him a new, safer rail, he said.
The Perth native moved to New Zealand 15 years ago and had several Cash Converter stores before "getting out" of the business a few years ago.
"Now, I'm quite happy listening to the birds at 4.30 in the morning. It's not so beautiful when you're jumping into a whole heap of rocks, though."