Good discussion going on.... and no one is stoopid or crazy because of how they do things.
This is all based on what this guy told me yesterday and does not reflect on how we do it in our shop or anyone else here on s101 does it. It's just the way this guy does it and has been doing it for years, without any failures. The guy I was talking about is given a graphics package for a vehicle. Usually two a week. He has no idea if he's doing a Coke truck, Pepsi, one of many beer companies or many many others. They are a fleet company and do everything from painting whole vehicles, to decorating them to rebuilding their motors or whole undersides. He is not given any instructions other than certain parts which cannot be removed when positioning panels due to wheel wells, hinges or major obstacles. These graphics are made by a company who sends them out with no concern of how much over or under the end results will be. He says it takes too much time to set everything out and worry about too much overlapping or incidentals getting in the way, so they've been instructed to start in the middle and work your way to each end. He then either cuts off the excess or just patches in with a solid color. He mentioned most of them end with nothing coming to a complete edge, so it's easy to add or subtract vinyl.
I had the same reaction most of you have here. When you have the ability to do it from back to front..... you use it to your advantage, if not.... you hafta go with the flow and get the job done. Whatever floats your boat, but like I said, he told me he's had no failures in his years doing this. He has two monkeys working in his department, but they aren't allowed to do anything more than get this or that, so I assumed he must be union and they aren't paid to help to keep costs down. Corporate America, I guess.