Knee-boarding is similar to water-skiing. The board has a slot for your knees and that's all there is to it. It requires less focus on balance than water-skiing and is a far simpler technique. Wake-boarding is a variation; the skier has one broad board instead of two narrow ones, one which to maintain balance. Where to Knee-Board Candolim, Mobor and Rajbaga Skills Required Comfort with water. You should be well versed in water-skiing to take up this sport. Safety Tips Apart from the boat operator there should be an observer.