Dwayne Aberhart with an even bigger rig shark caught surfcasting near Christchurch in December 2016. It weighed in at a massive 41 lbs. Congratulations Dwayne. I haven't seen a rig shark that big before. Featured image.
Rig Shark – Mustelus lenticulatus – Excellent Eating – Strong Fighter

Rig Shark are Often Caught by Surfcasters at Night Rig – Mustelus lenticulatus, has numerous.

Allan Burgess with kahawai taken on spinning gear after jumping out of the car after a school of kahawai while driving along the Kekerengu Coast, north of Kaikoura.
Kaikoura Coast Surfcasting – rig, sevengill, moki, kahawai

Kaikoura Coast Surfcasting There are many miles of excellent surfcasting beaches along the Kaikoura Coast.