Well imo carpets are not really meant for hosting. Btas i beleive are the best shot. And may i alsp add that when you do this keep a close eye on them if the fish start reacting strabgely, sepereate them for a while and then reintroduce them.Oh it's a valid method. My concern is that I have lost clowns that just rushed right in.
One minute I am "oh fantastic the clown is taking to the anemone, that next moment was oh great why is my fish floating around looking stunned".
My last Haddoni ate 3 Domino Damsels that rushed right in and 2 clowns.