You might want to secure it up on your rock somehow. The problem where it is if it should get sand grains in the fleshy part of the coral will irritate it possibly causing it to get the Brown Jelly disease. I would move it up on the rock.
That would work. I have all my torches, hammers and frogspawn up in the tank on my LR. Could you make a small hole in the LR and insert it in there.
You might want to secure it up on your rock somehow. The problem where it is if it should get sand grains in the fleshy part of the coral will irritate it possibly causing it to get the Brown Jelly disease. I would move it up on the rock.