The Robberg Nature Reserve is one of my favorite hiking spots. It takes about 2.5 - 3 hours to walk to the Point and back. Try to go around low tide as this will make some of the areas easier to traverse. There are stunning views on the entire walk. You can also do shorter hikes by turning back at either the Gap or the Dune if you don't have the time to go all the way out to the Point. This is also a great place to come for sun downers.