I have on occassion done a few on old timers and and the larger old timer pictured has pull/ pull on both elevator and rudder primarily for CG consideration Also is a picture of my Schneider Sport with Pull/Pull done this way.
I use brass threaded couplers like these:
http://www3.towerhobbies.com/cgi-bin...?&I=LXD893&P=7
and flatten the large end then drill a small hole to thread the Spyder wire of about 16 pound test and tie. Drip a small bit of ca on the knot and your done. This is not steel wire it is some sort of synthetic, just like string but very durable.
John