While you may lose half of the coupons, 30 becomes 15, the plunderer gets 50 coupons, and you can only lose 150k coins from plundering, it's good "Deal" for the plunderer.

However, only the top 50 people can plunder, which they can choose not to plunder, then they won't be wanted, and gain 30 coupons max. And some people in the top 50 might be inactive as well, which reduces the amount. But remember that you c*ways ask someone to help you when it comes to that, if you're in a big group, there's nothing lost from asking someone to help * you, and then the plunderer gets nothing if the * or you beat them, and they become wanted, I think. Just have everyone ask for help with only their SS, and they have higher hopes of not being robbed.