My putting strategy is simple: If you're not making putts, don't be afraid to change your technique. I putted great when I won the British Open in 2010, but soon after I needed a change, so I went to a left-hand-low grip. Then I went back to traditional, and now I'm left-hand-low again. One constant for me is feeling the stroke with my right hand, my dominant hand. On the practice green, I hit a lot of four-footers with my right hand only. But whatever grip I'm using, you can bet I'm feeling good about it. Otherwise, I'd change. That's how I avoid slumps.
Louis Oosthuizen has six wins on the European Tour. He also finished runner-up to Bubba Watson in the 2012 Masters.