I've toyed with that idea, but decided the 'go-in-guns-blazing' approach is my best bet to maximize the quantity of chances to pillage. Waiting three days may give an easy day before they turtle/timer up, but that means I've lost 2-3 chances of catching them with their palace pants down if they have a case of the Mondays drag into Tuesday.
Also, you don't know who else in the neighborhood is attacking. Some people on the low end of the list may be getting hit more often than the people higher up, who are nearly always higher risk. Back in the summer, one of the people in my hood posted a hood-wide message asking the other neighbors for tips against plundering. Some of the people in the hood listed who the aggressive plunderers were, and there was at least a half dozen players named, including myself. However, I don't remember any of them making a serious effort to take me on. I generally don't get many people trying to attack me, and a lot of it is retaliation, which I generally let slide.
I managed to successfully attack a guy with a 226% defense this week. More bad news for my neighbors, since I now know I can defeat weaker defenses than that, and I've seen very few people with anything better.