On a more advanced note which might not help out immediately but something to put into your incubator - the plane shifts or pivots around the line of compression through the ball. (Edit: thats through the ball at seperation that isn't quite true either unless its a straightaway flight your after) As most know by now it is the longitudinal center of gravity is what remains onplane. This allows an onplane force to drive the sweetspot directly towards and through the line of compression. The low point plane line will change as the plane adjusts.
This is an amazing concept. Mathew, this post cleared up alot of fog for me. I still need to put it in my incubator (along with all those other TGM eggs). This makes all those angles and geometry start to have some real purpose. So this is a good reason for a stationary head: to pivot around the line of compression.
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