All of a sudden I've had an idea of creating a little island in my sanded and adding several rock flower anemones to it. My thought is that ideally they'd obviously move around on the island but ultimately stay on the island as opposed to moving all over my scape. I've never actually kept any though, and I'm not sure how prone they are to moving across sand, detaching, etc. and what ideal placement is for them (e.g. on rock, between rock and sand, etc.) Any ideas or experiences anyone can share?