The boat launch is called Luhr's Landing, at the mouth of Macallister Creek. It's on the west side of the Nisqually delta, with the Nisqually itself being on the east side.

If the weather was nasty, I may think twice about crossing the open water in front of the delta in a small boat, but you can always hunt up Macallister Creek. Don't let the name fool you - the Creek is pretty deep and muddy where you hunt. Be warned that the Creek can get crowded, especially on weekend mornings.