After breakfast I motored into the east channel to Park's Marina. Knowing it is a narrow and shallow channel, low tide was the best time to enter. Moving very slowly and running aground twice it was easy to get back off. Crabbers coming in told me to stay on the green side. There were spots on the red that appeared to only be a few inches deep! Arriving at Park's Marina I was unable to pull into any of the slips due to the fast tidal current and my shallow water alarm sounding when 5 feet away. I finally tied up to the dock right in front of the now abandonded office parallel to the channel. I walked the island, had lunch at Lorraine's, visited the airport, took a second walk before deciding to take advantage of the high tide to return to my anchorage on the south side of the island. Going back out the way I came in, rather than the deeper and shorter channel to the west, put me much closer to the anchorage. In spit of staying to the green side I did briefly touch bottom on the way out even though it was just past high tide. Glad I got that out of the way when i did as it made the morning departure so much easier!