So with clans wars around the corner....
http://www.clashofclans-tools.com/Layout-29113
I've been toying with a duel core build. It works pretty good. It still has the "gut" or bottle neck. If you attack directly from the top or bottom the units get draw in and shot down by the high end defenses.
Attacking in my farming layout generally happens on the sides. These attacks usually stonewall at the infernos. Going up the "gut" tends to be suicide. Not sure if this variation would work but hey..... maybe