If you can get out to the sand dunes, there's some good boogie board spots! As this are gets built up with housing, its harder to access.

"The sand dunes at Mangawhai Surf Beach are awesome for the kids to be sliding, rolling, running down, while the parents sit and have a picnic under the trees. This is only a 15 minute walk from the park or an easy 2 minute drive.

For more giant dunes, you can cross the estuary and spend all day exploring the dunes right across from the park. You can go all the way down the estuary and even walk over to the surf beach on the other side."

-https://mangawhaiheadsholidaypark.co.nz/about/local-attractions/

From a reviewer:

'Hard to get to as wealthy property owners have closed off Tern Point. You can drive to Pacific Road Beach, park there and then hike across the beach for about 45mins (4km). Go for a swim on the way back, the beach is lovely.'