Find a target with desired amount of desired loot. (Works especially well with people who no longer play as their Elixir Collectors and Gold Mines are full.)
Find the most direct path to loot.
Place 15-25 barbarians so that they go directly towards your goal resources.
Wait about 5 seconds, then place remaining barbarians in circular pattern around entire enemy base.
If you don't want to lose trophies, I suggest placing one archer at every building outside of the defense's reach.
If you don't mind losing trophies, send all but 10 of your archers in a circular motion going the opposite direction that you did with the barbarians.
If your target has any splash damage defense buildings still standing, send remaining archers to destroy them.
If there is a wall in your way to something important, like storages or the Town Hall, send wall breakers at nearest wall after step 3.
(No execution notes)
You will have to many troops for single target defenses to handle, and they will be to spread out for splash defenses to be effective. The hardest part is finding someone with enough loot. DO NOT attempt to attack someone with very high level walls (8+) if all of their storage are inside as you will most likely fail (unless they no longer play and their collectors and mines are surrounding the walls and you can clearly see that they are full).