Well cutting off the rock has been very successful for us, but if it can be pulled then do that. Some zoas are the same way..some you can pull, other you have to cut or they tear apart.
We are finalizing the topic, debating between some hardware stuff vs Fragging, or maybe a little of both.
We are by no means professional, we jsut enjoy it and share what we do know, and have others share their knowlwedge as well.