I'm sure many are already doing this but for any who haven't thought of it yet here's a suggestion. Pick up a pair of small GMRS radios like these: Cobra GMRS/FRS 2-Way Radio Value Pack with 8-Mile Range - Wal-Mart
When one goes into the shipper and finds out which dock number to back to they can radio the other and not have to hike back out to the truck. They're also useful when one is backing and the other is watching/guiding.
When one goes into the shipper and finds out which dock number to back to they can radio the other and not have to hike back out to the truck. They're also useful when one is backing and the other is watching/guiding.