Thank you, that article really helped. I am definitely going to use this knowledge for future projects.
I use a CAD program to find the MAC Make a diagram of the wing as you would look at the wing from above. Then follow the instructions in the article. You can also just measure the area of the wing, then set the CG at 25% of the area. Draw a line, then measure the are of each side of the line. Keep moving the line until you get the CG where you want it.
I will find the CG for 25% and 30%. When flying a new plane, I start at 25% to get the plane trimmed out. Then move the CG aft until it flys the way I want it to. The CG at 25% is a very stable plane. I prefer a bit of instability, which allows easier flips and twists.
On my Versa, it flies the way I want it to with the CG at 30%. It turns into an uncontrollable flying squirrel at 31%. Flying wings are very sensitive to CG, if you are going to experiment, move it aft slowly.