Mike and I paddled from the Tidelands Marina on an approaching low tide. We correctly estimated that we would have just enough water to cross at the north end of the sand spit and follow it south, knowing that the area near grassy island would be very shallow. We only hit bottom a couple of times, but would have had a more difficult time 15minutes later. The weather alternated between partly sunny and almost completely gray, with a slight breeze. We stopped to climb the sand spit for a look at the ocean, and were surprised to see the smallest waves I can recall. Back in the boats, we continued south to the place where the channel wraps around to meet the sand spit. From there, we followed the channel back across toward Los Osos, staying with the channel on the east side, past the museum area and returned to the marina. In all, we were out just shy of 3 hours; time well spent.