I love this, which I found on the Information Superhighway as I was searching for info in general on Berowra:-
“Prickly Point is on the Hawkesbury River west of Milson Island and at the northern end of Milsons Passage. It is said locally to have been named by fisherman, who prior to the introduction of trawlers, dragged prawn nets along the shore and whose bare feet were bothered by the sharp aerial roots of mangroves protruding from the mud.
Source: Powell, John P. 1994, Placenames of the Greater Hawkesbury Region, Hawkesbury River Enterprises, Berowra, p.94”
So here we are – Prickly Point in all it’s blue-water glory. Doesn’t look particularly prickly to me… I think I could put up with the inconvenience