I currently carry a 90 liter monster backpack with lots of room to spare. I want to go lighter/smaller probably in the 50 to 60 liter range. When looking at the lightest packs I see they are all top loading only. I understand removing zippers and pockets make the pack lighter. My question is more about the packing. I assume you still pack your bag and pad in the bottom. So does that mean at bedtime you dump your entire pack to get your bag out? I am spoiled with the bottom access to the sleeping bag compartment and the side zipper as well. I was just curious how you lightweight backpackers pack/unpack and organize your gear in the pack.