I noticed this some while back raiding abandoned bases with double walls that the wallbreakers never go for the double walls if there is a single wall anywhere nearby making them walk around long enough to get killed.
I used double walls on three sides of my base leaving 1 spot empty at the corners with a spring trap and any WBs coming from those sides would run into the spring traps. This was to make sure that the attacker took out my town hall on the 4th side.
P.S. I had lots of extra walls and have found that at TH6 segmentation will lead to you losing at least one storage and will lead to you not centralising more than two of these- CC, AD, WTs and mortars.



