My YC did a "circumnavigation" of Alameda Island on New Year's Day so we could all claim our first cruise of 2019. Some pretty shallow water around the SE side of the island...down to about 6' but nobody ran aground, happily. The 2.5 hour, 15 mile trip has been compressed to about 40 seconds.
For some reason I can't upload the movie file, so here is the Youtube url.
Happy New Year!