On my first visit to Anagada last week, I found the channel to be well marked. Having said that, I was a bit nervous going into and out of that anchorage based on warnings from the charter company and in the cruising guide. If you don't get a bit nervous navigating through shallow reefs that are hard to see, you should not be there. I did not find the chart plotter to be as useful as the detailed descriptions in the cruising guide.
We did see flamingos on the wing above the anchorage - a particularly big treat for the birders in my crew.