Ah! I just did a big head-slap!
That table is for 2-dimensional flow wing sections, not 3-dimensional flow bodies.
Wings can't tolerate more than a 5% truncation without serious drag penalty.
I did this table for the motorcycle guys primarily.If you shorten a wing,never truncate it,go ahead and do a 'fast' curve to a point.
Here's something to compare to
But don't do this
Do this
