If you've ever wanted to visit this magical island with a fort on top - this is how I think you should do it!
While there are ferries that take large groups out here, they're all on a time table and have little time to relax and see it all.
Rent a boat! We rented a boat with a captain and he cooked us lunch. There are sail boats that fit groups as small as 4-8 that will take you here as well as other beaches and its a MUCH more relaxing time. Plus you get a private beach when you do this! Your boat will stay docked at the beach between the ferries and you'll get some solitude and an island all to yourself!