After the 2004 Olympics, the great Sean McGee from Ocean Grove did an analysis of stroke rate, split times, speed in metres/sec etc. for the top five males in each K1 distance at the kayak regatta. It makes for fascinating reading and gives a very accurate indication of the required stroke rates and speed to be at the highest level in world paddling. Most paddlers I have seen or worked with at national or international level find it very difficult to maintain or achieve these stroke rates over these distances, suggesting that kayak sprint technique is less of a pull of the paddle back past the hip (in other words a hard GRIND), but more of a fast catch and release out in front to the toes/knees with massive acceleration and rotation. In other words, it requires fast water work and controlled and relaxed time in the air. Food for thought. Get on Youtube and type in Knit Holmann, Adam Van Koeverden or Erik Veras Larssen and watch their techniques on video to verify.