I worked in a yard for several years and I saw all kinds of things happen. But I never saw where the owner was charged to move a boat unless there was some overriding reason. I have seen where some owners became a royal PITA and the yard would just rather they leave than stay. I have also seen a (very) few yards run by little petty dictators that were either clueless, or just plain greedy and could get away with it when they had more business than they could service
But overall, I would be upset if they charged me for moving. But if they had to move all your personal workstands and spare parts
and the genset under the tarp or whatever then I could see them wanting to charge you. I have seen a very few owners really abuse the privilege
of letting the owner DIY in the yard, with messy areas under or even away from the boat. And, they don't live close so they are only there infrequently. You may have been in that category. Moving a boat is a lot different than having two extra guys have to haul the other stuff by hand. It would definitely not be part of a deal.
I do agree 100% that every owner should befriend the guys and gals who work in the yards, from the menial labor guys, the foremen, the service
writers, office staff, parts
people, owner. I have seen some owners get away with bloody murder just from being extra, and genuinely, nice. I have also seen the opposite, many times, when some rich dude, or some cheap
owner who wants everything free or at a big discount, comes in and makes lots of demands and treats everyone like dirt. They don't get any slack. From what the OP said he is not like that but just FWIW.