That’s been done in a way with a catamaran service, the Fast Cat ferries were brought in to compete with them. I think they sailed from Porirua.
Part of the problem is you would have to base yourself in Port Underwood, which is kinda the middle of nowhere, which would erase some of the time savings.
If it is, Nicola’s name will be forever tied to it. And every time it breaks down, that comment will be brought up.