“Jacko”, not sure where you are getting your information from but you are way off the mark.
The primary objective of the Narrowneck reef was to widen the beach and dunes along Main Beach and Narrowneck beach to as a step to accommodate storm erosion. The reef is essentially a navigational channel constructed to guide some of the 500,000m3 of sand that passes along our coastline every year and was constructed using submerged sand filled geosynthetic containers. It still works today! After the recent storms you will notice barges dropping sand on the southern side of the reef allowing it to be channelled back on to the beach.
Although the reef was constructed primarily for beach protection, it did represent a major step forward in the goal of constructing an artificial surf reef from user friendly and cost effective materials.
Check out what Narrowneck looked like in 1996, prior to the reef going in.
Compared to the beach we all get to enjoy today.
I’m not sure about you, but I like having plenty of beach to launch and land my kite. The reef provides this!