I just finished fragging my hairy mushrooms. I fragged two of them (the larger two) I cut them both into 4's, so now I have 8 hairy shroom frags.
This is what I did.
Got a large bowl put fresh SW in it
Put the shroom rock into the bowl
Cut the two shrooms off the rock leaving a little meat on the rock so they can grow back hopefully.
Washed a plastic container, and put some washed/dried crushed coral from my FW tank to cover the bottom.
Cut the mushrooms into 4's trying to get a piece of the mouth in every new piece.
Put them into the container put a piece of panty hose on the top, secured it with an elastic.
Put the container back into my tank.