http://dubro.com/DUBRO2005CATALOG/index.htm
Dubro makes some little straps with three holes drilled in them that you can use if you dont want to make your own brackets, they can be trimmed shorter and bent at a 45 drgree angle.
I made little triangles out of 1/16" thick aluminum and rounded the corners, I drilled a hole at each corner. one hole for the ball link knob and the other two so I could attach them to the plane.
They also make the plastic "Snap-on" plastic ball links in 2-56 and heavy duty 4-40 plastic ball links. Some Car guys use them for steering hook-ups.
I just drilled the ends of my wooden struts to accept a peice of threaded rod on each end and epoxied the rod into the end of each strut after I measured how long I needed to make them.
. I just threaded the plastic "cup" part of the ball link kit on each end of the strut.
The knob part of the ball link kit gets attached to the little bracket.
There is a little hardwood block to the right side of eack servo mount in the wing. You can feel it through the covering, that it where I attached the bracket. i'ts about 1/2" square.
You just need very small wood screws to attach the brackets. Don't go overboard and drill big holes in your wings spar. (for example) That would be a bad thing...smiles. The other end mounts down on the landing gear block.
The struts just snap on and off with a ball link tool, don't use a screw driver to pop them off or you'll poke a hole in your wing...smiles.
They work, but to be honest I don't think that they are really necessary. I guess it all depends on how you fly the plane. I like to just float around.
I didn't want the hassle of having to "Bolt the struts on" so I used the snap-on ball links.