I'm new to mowing for the public, and not very good at estimating distances. I've got, and plan on using, a measuring wheel. My question is: When you measure a property, do you measure the entire thing, then subtract for the buildings, driveways, etc.? Or do you measure the front yard, then the back, then the sides seperately? I don't want to cheat anyone, myself included. Just wondering what the standard procedure is.