Those are different things you talk about.
Barerooting means to remove all the soil from the roots, usually done before shipping a plant.
Bag rooting means rooting a cutting by placing it in a tightly closed plastic baggie with very little soil.
I do 'gang rooting' where I place a whole stack of cuttings together in a big bucket with a few inches of perlite. This is what has always worked best for me when trying to root cuttings.
