I think your answer depends on your CG. If it's on the trailing edge, which I doubt then it'll do nothing. The only thing I can think of (and I am by no means an expert on this stuff) is that the force or torque that the added weight applies wont be as great, so it'll only shift the CG back a little bit. Since T=FD (force x radius) the smaller the radius, the smaller the torque.


But that's just a shot in the dark.