Titirangi is nice…. But it is a long drive. My dad fished there one autumn for a couple of hours around 10 years ago and caught a couple of Snapper and a conger… A local said it was the first (Maybe one of few) Snapper he heard about being caught all year from the beach.
I do not believe it is any better then many of the other beaches in the outer sounds. I have spent a few holidays in Port Gore (2 bays to the east) and the fishing there is excellent but access is difficult without getting the key. It is nice and remote.
Without a boat I would personally go to French pass because there is area of current to be enjoyed….. It might be possible to hire a boat from at Titirangi….