I would actually counter that and have it full of the partial stacks so that the raider thinks they have gotten your goods. Your full stacks are in that hidden spot.
BTW, PVP tip 532. Keep your regular mats unlocked and store your unique and special stuff behind/under these. The raider is so giddy with the goods you have left and you are clearly a noob to keep your chests unlocked that they don’t think of blowing them away to see hidden spots…even when they start cutting into your side foundations to find your “hidden room”…they leave the open chests areas alone.