You can pick up a Kilmelford Yacht Haven mooring here, and they have a good reputation for fixing things on boats, as well as having toilets and showers and so on (ph 01852 200248) .  The village of Kilmelfort with the Cuilfail hotel, restaurant and cosy bar with real ale (ph 01852 200 274), is I reckon a bit too far to walk, only a mile maybe, but along a main road with no pavement. You might get a lift from the hotel if you phone them. Better, the Yacht Haven may take you free of charge. The village has a shop and café.  Otherwise not much to do.