2001-2005 LS owners - question

[volfo]

Can anyone tell me where the stock ballast bags go in the 2001-2005 OB LS and Mobius LS? My LS has no ballast and I want to add a little ballast and am not sure where to put it. I assume the natural place to start is under the rear bench seat, but I'm having a hard time finding a bag that would fit well back there. It's not a very tall space. If it goes there, does anyone know what brand/size? I've seen a few people talk about putting ballast in the rear ski locker, but I've also heard this is a bad idea.

I'm guessing the other spot is the floor ski locker. Is there a 3rd spot (I assume there is, hence the name gravity 3)?