Hi Robert
I don`t claim to be a aerodynamist, I have too much common since, Hell I can barley spell it
If you want to improve Knife edge flight Move the c/g forward and increase the wing inc. it`s just that simple Trust me.you will get power and perfect control.
however, in my testing, and I do too! much,lol the Strake makes the fin and rudder more effective in yaw Control, from static, to full throw.better than anything I have tried including an increase in Fin/rudder size.
designing a Pattern plane,The fuse size always dictates rudder power, the fin size,and airfoil, dictates Yaw control. rudder is the smallest factor.
however your observation may have some merrit

I used to shoot Archery , back then I noticed when the arrow was trimmed correctly ," to shoot the most consistant,"
(we did this with Fletch and different weight tips ) they would always shoot the best in the wind as well.
in other words, if we had to shoot in a cross wind the arrow would always fly into the wind so we had to adjust downwind But it was always controlable no matter how stiff the wind was. Fuse size Never effects wind flying ,,only trimming does.

A Competition pattern airplane, When set up and trimmed Correctly! will do the same thing ,So, I added "Fletch" to the fuse,
and the c/g was perfectly adjusted for consistant yaw performance before hand (over simplified) so, the out come is what I`ve been explaining.

Just remember, if you have an airplane that drifts downwind I call it sliding, or skidding,and is hard to keep on line,in the wind in all attitudes, your airplane is not set up correctly.Any one can trim an airplane to fly in calm conditions , the wind trimming is what sets my system appart from the rest ,,,consistancy and reliability,in all conditions ,no surprizes. With my designs and trimming methods the airplane will attack the wind on its own, in any attitude verticle, horizontal,ECT.
CG too far back is the only reason you will have to use a throttle to rudder mix for example. or rudder into the wind yourself,it`s as simple as the arrow experiment.
We put too much Stock in fuse shape,wing profile rudder size ,,in fact it`s hard to tell our planes appart except for paint schemes,
has anyone found the magic airfoil or wing platform no one knows about ,,,pure fluff.
The fuse shape has so little effect in the big picture, If the designer concentrates on Trimming he will learn more about tweeking the design than a text book could tell him ,like about where to put the center of pressure on his fin.hog wash most anything will work the same as any other.
When you can trim the aiplane to fly perfect with no mix only then will you be able to improve the design ,,untill then you are working on false pretenses and blame what is a trim problem on a design flaw ,, Hense there is no improvement only confusion and fairy tails to explain away why a airplane needs 3.5 right thrust and 2.5 down thrust for example. or why Gyro effect is the reason we need to use a rudder to throttle mix. and 5 mixes are required to fly it.


Always remember,Wing Incidence. controls where to put the CG. to set up a "pure" pattern setup.
The less inc. the furthur back you run the CG V/versa. the rear setup is where the snowball begins.
Most Stabs are too big and most fin/rudders are way oversized there is more problems being generated from these two area`s than anywhere else ,,Excluding wing inc. which is the reason for the latter in a poorly trimmed and thought out design.

So don`t put much stock in a chart, or the test books No one at Nasa has ever designed a mix free Pattern plane and most data derived from the text books lead to poor designs and confusion and a continuation of the same ol`

Sorry I don`t know why I was so long winded
Bryan