Technique ‘Push-n-Pull’ is a modification of down unweighting in its timing. Its distinctive feature is smooth bending of the knees which doesn’t provide unweighting of the board for change of the edge. That’s why a lot of attention is paid to rotation in carving.
..is to create the conditions for the deepest inclination in the beginning of the turn, which is necessary for laid-down turn.
The main advantages of down unwighting are exactly the major reason for being chosen by extremecarvers for their style. However in its academic performance it cannot help to make a laid-down turn. To make a laid-down turn you need to give up all harsh movements because edging angles are 75-85° and they can be broken easily on high speeds. Also to make a laid-down turn you need to be straightened up by the middle of the turn and after it you should smoothly approach the edge change.
Shifting timing of movements closer to the centre of the turn leads to the situation when board doesn’t unweight in process of edge changing because vertical motion is too slow. That’s exactly why you have to recall Rotation and to use it to change the edge. Combination of Rotation and Push-n-Pull creates all the conditions for successful laid-down turn and for finishing it with good speed.
As soon as you have changed the edge you should straighten your legs and incline into the turn proportionally. Your maximum inclination and the most unbent knees should be in the centre of the cave, on the fall line. You shouldn’t stay in such position for a long time because your board is prone to micro-disruption from its edge without damping of the imperfections of the slope.
Right after crossing the fall line you should start bending your knees but do it in the same pace as you were unbending them – slowly and proportionally to the turn and the speed. Also after crossing the fall line you should exit your deep inclination because delay can result in too much friction in the end of the carve and loss of speed and contact.
After crossing the fall line you should also come to ‘Minus’ or ‘Plus’ position depending on the turn to create extra motion for the rotation. By the moment of rotation your knees should be strongly bent in order you can be in deep inclination right after the edge change. After that you return to basic position and change the edge. When you feel the support with your heels/toes you should push your knees.