We stayed in Bilinga at the end of November and looked like the only places to hire sup boards were in the rivers.
Plenty of surfboard hire places.
We were keen to surf but onshore first few day so did tourist things.
The only day there was surf was on the Friday when I had work function

The Saturday was flat so went for swim.
I can recommend Coolangatta Surf Club for Thursday night Barramundi Special

Good luck