His partner told the Northern Advocate yesterday that the family had also hired a helicopter to take part in the search, which would look closely at the many areas of mangroves in the harbour.
"We think that's the best way to get into those mangroves to have a look. If they see anything [from the helicopter] they can mark it on the GPS and we can go in by boat or foot to have a closer look," she said.
She said searchers had to go out in pairs as there was a danger of people getting trapped in the mud in some parts of the harbour and pairs made the search much safer for all.
"We don't want anybody else getting into trouble here, we just want Deli back," she said.
A rahui has been placed on the area stretching from Rangi Pt to Motukaraka and will remain in place until he is found.
Meanwhile, the Advocate's fishing guru Mike Burgin is warning that no fish is worth dying for after a man died while fishing from the notorious spot, The Gap, near Taiharuru, on Sunday. Mario Openshaw, 29, was swept off the rocks and his brother jumped in to save him, but was unsuccessful.
Mr Burgin said the weather forecast for Sunday was for four-metre seas and 45-knot gale warnings.
"They should not have been out there and that's the sad truth. If people are going to go out in these sorts of conditions they need to understand what the weather is going to do during the day and when the tides are going to turn," he said.
"What is fishable on an in coming tide may turn ugly once the tide turns to head out and vice versa ... and most importantly never put yourself somewhere that you cannot retreat from a large wave and never ever turn your back on the ocean even for a brief moment."