Stall the kite in a straight downwind landing. Once it's resting on the water, by releasing tension on both lines, you can let the kite sink into the water. Keep both lines even, so the kite sinks straight down, nose up. If the kite is fully submerged, start whistling the jaws theme and pull both lines equally, so the kite comes straight out of the water. Don't pull too hard, let steady pull and wind do the lifting.