If I don't hang the bladder with the hose toward the bottom, it's harder and harder to get water to drink, so I end up removing it from the pack to get it filled. It may be difficult to squeeze the bladder back in with a very full pack - the Aura 50 I have makes it near impossible with the curve of the main compartment, but the Gossamer Gear pack I have it's much easier, as i can put my arm down the back into the bladder pocket to create a gap and slide the water in.