Need to root cuttings of passionflower vine...? best way

I want to get some cuttings and root them for the Round-Up in Sept. What is the best way to do quite afew...I thought maybe in one container of water, but don't know if I will have trouble separating the roots if I do it this way. What do you think?

http://davesgarden.com/forums/t/523806/

naien...looks like a great link! Thank you...I just started to read it and although I don't have the medium they are talking about...I do have some rockwool...maybe I will try some in that too!

Most root very quickly in wet sand and a little potting soil mixed in, such as 3:1 ratio. Keep water in the saucer under the mix. Sometimes I use rooting hormone, but most of the time I don't. This mix works for LOTS of different plants.