They really do seem to work very hard. I recommend watching the video on site and reading about the boat that sunk! There have been delays recently, but in the video you can see how much rock they get in a 10-12 hour day. Doesn't seem like much. I figure it took about 3 people an hour on that boat and in the water to get my rock, then pack it..... All I had to do was go to the airport.
I really appreciate that they don't destroy reefs and that the stuff comes loaded with stuff.
-Brendan