Thanks for posting the picture of the zoas growing on the glass like that. I am definitely ready to go that route. I actually have a new situation in my 40 gallon with some palythoas that are spreading way too rapidly and they have begun growing against the front glass. That along with a huge colony of xenia that my wife picked up as two stalks less than 2 months ago.
In my 75 gallon I have a Pavona and 2 Supernatural Montipora frags that are also growing along the front glass. I am going to let that section get big enough so I can break it free and glue it to a magnetic frag plug and see what happens.