He may be a sailing and boating guru and if he is who I think you're referring to, I have a tremendous respect for his knowledge and ability around boats, sailing weather and water stuff. I don't know he knows anything about green marinas though.
I'm just astounded that the marina folks on the board say that it is 'all from upstream'. Yes, sure, a lot from upstream, but should that stop anyone to clean up their environment? Is everything not from 'upstream'?