Previously, my rock scape was unstable and the rocks are quite rounded, thus i was unable to place much corals, especially my favourite pratas.
actually there's no secret receipe, just have to find good live rocks and insert the prata in.
The base of some pratas are very rounded (usually this type i put on sand bed), those with jagged base can be slot into the gap of the live rocks easily.
p.s sld check out iwarna's tank, their one rock foundation can place up to 20 pratas/cyarinas. tt's something i aspire to achieve some time. .