Coromandel businesses are crossing fingers for a bumper Anzac weekend after its local economy lost $30-million in the year's first quarter.

A driving lottery has begun via the coastal route until Tuesday as State Highway 25A remains closed to vehicles.

It features cameras in secret locations from Thames all the way around to Waihi, photographing random vehicles.

Prizes include stays at a beach resort, dive trips and dozens of oysters

Destination Hauraki Coromandel's Hadley Dryden told Roman Travers January's poor weather made it a tough summer for local operators.

He says for a community reliant on tourism and visitors, it's been hugely significant.

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