How to glue and frag on a big sps colony ?

[Casey8]

That is another cheap alternative for me, but unfortunately I am unable to move the big flat rock to drill it without breaking other corals. It is encrusted with lots of different corals on it. But I will use your method for other small corals on the removable rocks in the future. I would have saved quite a bit of money I spent on glue if I would have known this.
Thanks for your input.