Hi, first time posting in a long time. I am a playing professional, former caddie to Ryder Cup Captain, TGM enthusiast. What is all the hoopla about this D-PLANE stuff?? Seems to me it's describing what happens when you swing "off-plane", stop the pivot and let the hands do a fly-by, or when some other rusted machine part breaks down. Any thoughts would be great. I see Mr. Manzella thinks it's better than sliced bread!! And Tracman??? How can this be a Godsend to teaching? It seem to show results of the shots like no other, but can it teach someone lag and compression?? I'm gonna have to say NO. I mean, my wife KNOWS when I miss a fairway!! BE well