I think there is still confusion over hiring a skipper on a bareboat and a crewed charter. The easiest way to put it is if you are on a crewed charter you show up and do nothing but board the boat. Everything is done for you. The boat is cleaned, provisioned and ready to go.
If you hire a skipper he shows up and does nothing. You do the provisioning, cleaning and myriad of other details that need to be done. He drives the boat from A to B for you.
If it's a fully crewed charter your looking at costs from 12,000 to well over 20,000 so the tipping amounts are substantial. It is in essence another charge that reduces the published charter cost.
G