1- You asses what is in the loot pile. If you are in a hurry (being chased by zombies/ being overun) its a good idea to visually look at the pile without physically going into it. This works 60-70% of the time. You may miss 1 or 2 mags of what you need but it will help if you are in need of water, food or a weapon. 2- You have to prioritize. This goes for organizing your inventory too. You should become familiar with what the items actually are in the pile. A usual first timers mistake is picking up all the chem lights, flares or what ever is in the pile. This not only fills your inventory, It also may give you items not necessary at the time being. You should know what the items do and when to use them. Just a little tip: Learn what zombies can and cannot do. They cannot usually run in buildings and most of the time can be defeated by their worst enemy. The Bush or the Legendary pine tree. Hopes this helps....if anyone actually sees this.