how do you do it?

[skabooya]

I agree. The two island look works really well but it will depend on the shape of your rocks. I wanted a 2 island look but unfortunately my rocks wont allow it to happen without it looking really bad.
U shapes also look very good and the higher you can raise the rocks to the surface (too look like a mountain) the better it looks too.
Ive also seen a slanted scape that was stunning but they were using shelf rock.