I imagine that if you lived there you would have your own boat. I wonder how much it costs to moor for an evening on the Fowey side? Are there any pubs or restaurants in Fowey with moorings?
The Royal Yacht Club and Gallants Sailing Club both have places to tie up dinghies/tenders for their members, so you could join one of them to make use of the facilities.
There's also Albert Quay, where people park their tender before coming ashore. Usually, visiting yachts would pay mooring fees, and (in theory) resident boats should be paying harbour dues, so it's not like an attendant sits at Albert Quay taking payments.
But I'm not aware of any pubs or restaurants with moorings.