Napeague Bay is a good-size body of water on the south fork, between the towns of Napeague and Montauk. It is almost a lake, connected to Great Peconic bay [Gardiners Bay] by a small strait at its northern end. The good sailing is all in the northern half of the bay. The south end of the bay is shallow, somewhat weedy, and has some small boats moored there. Boat traffic is virtually non-existent. The bottom is sandy. The bay is heated by the sun, and hence quite salty. It's shallow enough that you can stand in most places, especially if the tide's out. There is very little chop in the bay. On a really cranking day, you might see 6-12 inches... just enough to launch if you try hard. It's a good place for speed runs, jibing practice, and waterstarting.