[kimberlite]

there are a number of marinas in block. champlains rafts you off as many as 6 deep.
i prefer block island boat basin you get your own slip. many times you need to make a reservation months in advance
check out blockisland.com

the harbor can get very very crowded so
make sure you have good ground tackle and a dinghy if you want to anchor, since you could be anchored out in the back 40.
there is slow launch service.

i think the beauty of block island is that there isnt much to do. there are a few bars and good restaraunts, but not much else.

the island is a very natural non commercial place and is one of the nicest places you can stay in new england.

will you be going straight to block or down the sound?
regards
eric