Organization is key in the back. If you can’t find something organize the shelf it’s supposed to be on. Check other shelves, if you’re looking for a 3000 package, might be on the 8000. 1000 might be on the 7000. Still can’t find it move on, might not even be on your truck. If it turns up just back track and redeliver during pickups or on the way back to the building. Whenever it makes since. If your truck is overloaded with irregs write down the addresses and get enough of those off first so you have enough room to work in the back. Don’t worry about putting on extra miles.
Oh yeah, don’t hit anything!!!