total immersion 流派的老师 terry laughlin 讲的透彻，他得癌症前几年去世了，我买过他的光盘教学，现在YouTube可以免费看一些了。
walkthrough(往后的日子不新鲜)
Total Immersion Self-Coaching Series: Propulsion
Learn methods for more fluid and streamlined propulsion in swimming. 0:10 - Propulsion0:38 - Spear Switch1:20 - Spear and Strokes1:38 - Swing Switches2:15 - ...