Mounting Corals

[Lofus]

My tank has a number of larger rocks and I was wondering if I should get some smaller rocks to attach any new corals to so that I can move them around if they are not happy where I put them.

I'm just thinkiing of Tony's M.Cap that has outgrown its spot.

By larger rocks I'm talking about 30cm long by maybe 20 cm wide and smaller rocks I was thinking 5-10 cm x 5-10 cm.

How does everyone pick the best spot for a coral?

Jim