A lateen-sailed dhow Underwater Archaeology Reefs and Ruins on Mafia Island By Karen Berger and Dan Smith He likes to ski, she likes to surf. He likes to hang-slide, she likes to heli-ski. He likes to drink beer, she likes to backpack. I've got a bunch of friends whose vacation discussions make Felix and Oscar look like a harmonious pair. Dan and I, on the other hand, are blessedly compatible. With matching backpacks and hiking boots, we've rarely had much trouble picking a place to go. But last year, when we spent five months in Africa, things got a little interesting.