Approaches
The biggest question approaching Bumkin under sail is the timing of current in Hull Gut. It's a long way here from Boston's inner harbor, almost 10 miles, and if you're fighting the current in both directions, it can be more than a day's trip for a engineless sailboat, or a lot of tedious motoring for an auxiliary outboard.
For a discussion of Hull Gut currents, see Peddocks Island.
Anchorages
There are two possible anchorages off Bumkin. North of the island, in Hull Bay, there is plenty of room in 8 to 12 feet at low. It's reasonably protected in summer weather, but a long way around to the dock on the south side. Favor the island shore going in to avoid the unmarked 2 foot rock approximately 1/4 mile off the island's northwest corner.
It's possible to anchor on the south side, to the east of the dock, on the narrow shelf of 7 to 8 foot water between the island and the channel. There is current here, flowing to and from the marshes in Hingham Harbor and the Weir River. We've dragged on a (carelessly set?) Danforth.
Moorings & Slips
Bumkin has no moorings or facilities for extended tie-up. The pier is for drop off and pick up only.