Ten non-lethal SMART drum lines will be set in the ocean along an 11.5-kilometre stretch of coastline around the South West town of Gracetown in an attempt to prevent shark attacks.

The WA Government agreed to the trial in August after sustained pressure from the Opposition and lobby groups, and began a community consultation process on two potential design options in September.

The design of the trial program was released on Sunday.

The aim of the trial is to determine if the technology is effective in reducing shark attacks. A similar system in northern New South Wales catches, tags, relocates and releases sharks.

A number of people including surfers Chris Boyd, 35, and Kyle Burden, 21, have been fatally attacked by sharks in the area over the years.

There were also two non-fatal shark attacks in the area earlier this year which led to the cancellation of the Margaret River Pro surfing event.

The drum lines are expected to be deployed in early 2019, about 500 metres offshore.

The SMART drum lines send an alert when a shark is caught on a baited hook. ( Supplied: NSW Department of Primary Industries )

The State Government will also extend its Shark Monitoring Network to the Gracetown area, with two receivers at Cowaramup Bay and a third at the nearby surf break Lefthanders.

The receivers detect tagged sharks in the area and the information is uploaded to the Shark Smart website so people can decide whether to go in the water.

Fisheries Minister Dave Kelly said the new receivers would cost about $200,000 and were on track to be installed by mid-December.

It will take the number of receivers in the WA network to 30.

Mr Kelly said department scientists were finalising the details of the trial before its anticipated start early next year.

"I want to have the trial up and running as soon as possible, but not at the expense of doing it right," he said.

"The addition of three new satellite-linked receivers that detect tagged sharks further reinforces the McGowan Government's commitment to a science-based approach to shark hazard mitigation."