Way back when I started surfing, I read the "Surfing FAQ" - apart from various long forgotten tips on how to judge wave size and the difference between point breaks and beach breaks, what I remember most vividly was the importance of having a "surf buddy". As my memory recalls, a true surf buddy would be able to tell you if "your butt crack was showing."
Sadly, a look at the surfing FAQ today reveals no such gem (and is poorer for the lack of it).
Anyway, this last weekend, I had a surf buddy again. Ben, my cousin-in-law, is in Cape Town again for a few weeks. Ben is too polite to make any comments on my butt crack visibility, but he's still a damn useful source of information. I promptly took him to my favourite spot (where else), and he was able to provide me with a few useful snippets.
For instance, when the surf is big, getting out at Derdesteen can be a challenge. I've learnt to look out for what I call "channels", gaps where breaks from the left and right end at the same place. Ben, on the other hand, says I should look out for "rips" which he says you can spot by looking for the sandy water. These rips, which are very localized offshore currents, will swiftly propel you out beyond the break.
Also of interest this weekend was that while Derdesteen often suffers from a stiff northbound current, by finding a rip and staying south of it, you can sometimes avoid that current (OK, you may no choice if you want better waves, but its useful information all the same).