(CNN) -- Retief Goosen showed his liking for Loch Lomond with an eight-under-par 63 to storm into the lead in the Scottish Open.
Goosen acknowledges the applause of the gallery after another birdie at Loch Lomond.
The South African is the course record holder with a 62 set back in 1997 and won the tournament in 2001, the same year as one of his two U.S. Open triumphs.
"I do like it here," Goosen told the official European Tour Web site www.europeantour.com.
"The golf course is fairly generous off the tee, and I'm not one of the straightest hitters, so it does help a little bit for the odd one, if you're off by 15, 20 yards, might still stay on the edge."
The South African carded seven birdies and an eagle with a solitary dropped shot to take the halfway lead on 11-under 131.
But Australia's Adam Scott, watched by tennis star girlfriend Ana Ivanovic, was just two shots behind after adding a 67 to his opening 66 to reach nine under.
"It feels really good the way my game is at the moment," said Scott, who has slipped to 43 in the world rankings after a slump in form.
"My ball striking is there again, and just enjoying being out there and being able to do some shots and hit some shots."
Scott's compatriot Marcus Fraser is tied for third with last week's French Open winner Martin Kaymer on eight under, the German moving into contention with an excellent 65.
American Nick Watney is a shot further back in a seven-strong group on seven under ahead of the weekend action.
European Ryder Cup captain Colin Montgomerie just made the halfway cut at level par after a four-birdie burst with defending champion Graeme McDowell on the same mark.
But two-time major winner John Daly missed out after a second round 75.
The tournament has attracted a strong field as the players prepare for the British Open at Turnberry next week.