#1 05-29-2012, 11:59 AM ml249 Junior Member Join Date: Jun 2009 Posts: 17 Thoughts on D plane from a TGM perspective Recently saw some videos regarding ball flight theory named "D plane". Quite honestly, it was all very confusing and complicated. Are there any sections in the book that address this theory and i'm wondering what, if any, TGM experts here take on the utility of the theory. ml249 View Public Profile Send a private message to ml249 Find all posts by ml249