Gary,
This is the main part. I found that all the Russian F2D and Fast ARF's had very similar airfoils in the LE area. The "hook" at the top fits snugly over them. I used a 1" dowel to connect the pieces (the template wrongly shows 3/4"). There are small weights towards the front of the "ear" to help it fall when it is released by the pull pin.
It took about as much time to build as a Voodoo. The lauches are pretty smooth, unlike some stooges where the plane is pulled out of a sleeve. The rails that stick out 6" to the front are important for a controllable release. The top photo shows a "wing shim" at each end of the board to block up the wing as the airfoil gets thinner nearer the wingtips. This stooge can launch Speed Limit, F2D or Fast birds, although I have not tried a Fast yet. That would probably require anchoring the stooge or at least adding substantial weight to the sawhorse. I built it strong, out of 1/2" seven-ply plywood (from Hobby Lobby). Cost a bit, but should last a long time, and is heavy. The metal sawhorse adds weight, too.
Don't forget to step backwards after taking off, otherwise you may have an obstacle to deal with later on