I wish MA would vigorously pursue this south of MV...it is a desert of flat sand out there, we need structure. Also the cape could benefit as well. If done right it could stabilize beach erosion as well as provide habitat. But we need a lot of them both in deep and shallow water. I like the idea of concrete structures. Moreover it is a good place to dispose of old fishermen ashes when they die...bury them in a concrete reef and then name it after the dude. "Today we will be fishing on Sandman reef" It could create jobs and protect the environment at the same time. The problem in MA is there is over 22 agencies that need to approve it and if once says no your hosed. As an example... I recently spoke to the shellfish warden about the herring runs that were suppose to be restored and why they are still not up and running....he said they actually got over 200K to re-dig them out and cover them in certain places but they have spent all that and more just in permits and have no $ left for actual construction. And you want to know what is wrong with big liberal government....
It is OK if they are fished. As you add more reefs the structure is pressured less. I thought RI sank the Jamestown bridge as a reef. How is that working out? You have to look to florida and gulf states, they have got it right when it comes to reefs.