Paid search in Cairns comes down to two things: routing and visitors. The city runs north to south along the coast.
The Captain Cook Highway carries crews to Yorkeys Knob, Trinity Beach, Kewarra Beach, Clifton Beach and Palm Cove, the inner suburbs sit around the CBD, and the Bruce Highway runs south through White Rock, Mount Sheridan, Bentley Park and Edmonton to Gordonvale.
A van on one end of that line is a long way from the other, so a single radius sends clicks to crews who cannot attend. The second issue is the visitor audience.
Travellers on the way to the reef or the Daintree search on phones constantly, and loose keywords pick them up. Search volume is smaller than in the big capitals, so each wasted click takes a bigger share of the budget.
Heat lifts air conditioning searches, and the wet season brings leak, mould and storm searches in waves. Agents answer to the QLD Office of Fair Trading and trades hold QBCC licences, which stay with you while HeyLead handles the marketing only.