On the north side, going north
Shelly to Palm beach, and vice versa. Parking difficult
Freshwater to Palm beach, parking ok
Long reef (North side, brownwater/Fishermans) to Palm beach. Parking permit req.
Mona vale bad in to Palm beach, parking ok
Going south.
The same as above, plus
Avalon as a start in NE conditions, saves the washing machine effect at Bangalley Head.
Big problem is traffic, delaying the dreaded car shuffle, and turning even a shirt paddle into a half day excercise!
On very very windy days we do a Pittwater inside run that is great fun with up to 3 foot wind chop. If it's a nasty southerly you can get a couple of runs in with good shuffle planning and the bad weather dampens the traffic too.
For parking your best with 3 council stickers, pittwater, warringah and manly. A bit of an investment but worth the hassle free parking.
Using only public transport would make any of these paddles a long day