I live six months of the year on Norfolk and have lived there on and off since the mid 1960's. It is worth visiting but very weather
prone, with no harbour at all and mostly high cliffs. If you are prepared to wait around there is usually a lee to anchor
in, but no guarantee of getting ashore.
No boats are kept in the water
, they are craned in and out when needed. Sometimes the fishing
boats can't get out for a week or so.
The main landing places are stone jetties at Cascade and Kingston.
Having said that, lots of yachts pop in there, usually on their way north from New Zealand
If you stop there, I would suggest you have someone on board at all times.
Every so often a yacht goes ashore there and is lost
When are you proposing to go?