Sorry I haven't posted anything on Ragged yet. What I know off the top of my head is that it is private, with a cottage on the south (oceanside) shore. The steep rocky north shore forms a broad anchorage when the wind is out of the southwest. I understand landing is tolerated (I don't have this in my book), but I have only explored part of the north shore myself. I don't think you will find anyone out there this early anyway.
A few words of caution, though. Ragged is out there. It is exposed, and the current/wind combination can be fierce when the tide is running or the wind is blowing, or both. There aren't may other boats out yet, and that water is still just about as cold as it was in February. Plan carefully and have a safe trip.