I have a persistent problem with scheduling, and I'm guessing it's pretty common. We are usually booked out a minimum of 6-8 weeks. It is possible to give people rough estimates of when we will get to their jobs, but as soon as I say a rough start date folks plan their whole lives around that date. Even though I tell them it's a rough date. It seems like the more important the start date is to everyone involved the harder it is to keep the promise. Sick workers, rain, back ordered materials, breakdowns, hurricanes, locusts, and so on. I try to keep everyone abreast of the current schedule, but I still feel unprofessional pushing back start dates, especially when I have to do it to the same person a couple of times. What does the rest of the world do?