Yes the great whites become more active inshore in summer. Take a look at this:

From News24:
Cape Town - A Fish Hoek lifesaver had a close encounter with a Great White shark on Friday, Cape Talk radio reported.

Paul Major set out in his surfski just after 16:00 from Fish Hoek beach. He was heading towards Simonstown and was about 100m from shore when the maneater knocked him off his boat and began crunching the rear of his surfski.

He said the shark circled and then chewed the fibreglass while he lay very still and prayed out loud.

Then it submerged while Major balanced on the remainder of the ski.

He managed to swim back to shore.

And this:
From the Cape Times
Surfskier attacked at Sunny Cove

Great Whites are back
October 3, 2005

By Anél Powell

Less than 24 hours after a surfskier was attacked by a shark near Sunny Cove, another four Great Whites have been spotted hugging the coast in False Bay as the predators move away from their winter feeding ground off Seal Island.

Clive Wakeford, president of Western Province Lifesaving, confirmed that a Great White shark was also seen swimming near the Sunny Cove walkway at 10.30am yesterday.

The sharks were spotted from a Base 4 helicopter yesterday afternoon.

Two Great Whites were cruising off Muizenberg's back line and another two were swimming close to Fish Hoek beach.

Mike Meyer of the City Shark Working Group, said: "Research done by scientist Alison Kock indicates that the sharks have left Seal Island, their winter area, and moved closer inshore."

After a week of shark warnings that had lifeguards at Fish Hoek beach on high alert, Trevor Wright's surfski was attacked by a Great White shark in Sunny Cove just after 3pm on Saturday.

Wright, 52, was paddling 80 metres from Sunny Cove when the shark attacked.

Wright was unharmed in the incident, but the shark destroyed the front of his surfski, puncturing the fibreglass with four tooth marks.

"Here's trouble," was the first thought Wright had when he felt "a hell of a knock" on the back of his surfski.

Knowing that the water was too deep for protruding rocks, Wright said he quickly realised "something was not lekker".

A Great White shark then appeared in front of his surfski.

"I still have this vision of the shark's open jaw and eye," said Wright.

Although Wright did not see the Great White approach, his friend Alan Weston said the shark came up out of the water to attack the surfski.

"I just saw the front of the boat in its mouth," said Wright.
He was too far from the shark to hit it with his paddle.

"I thought: it's you or me and it's not going to be me," said Wright.

The shark then released the surfski and swam alongside the craft, thrashing about in the water.

When the shark dived under the surfski, Wright and Weston paddled to the rocks.

"If I had fallen into the water, it would have been far worse," said a relieved Wright.





Hopefully the sharks will be put off by the large number of boats on the water during the competition.