We were up at Rainbow last year and the conditions around the rocks were similar to the photo in above post by Edz.
In the 2 hours I was swimming with the kids I would have witnessed at least 20 cars run the gantlet around the rocks with all these cars driving in salt water ranging from wheel depth to waves crashing through open windows or over bonnets. A couple of these cars did sink and needed a quick snatch form good Samaritans who put their own 4WD’s in jeopardy. But this still didn’t put people from trying after the 4WD was cleared.
Maybe I’m getting old and boring, but that type of driving is way too risky for me.