I have found this one of the easiest plants to root. I just took a runner, cut it into 14 pieces, dipped in rooting hormone, placed in the bottom half (with drain holes) of a 3 liter bottle with regular dampened potting soil, replaced the top of the bottle and set it in bright light. All but one of the cuttings rooted within a couple of weeks. Just be sure not to put it into direct sun or you will cook it.
Patsy

Use the whole thing. Some will root faster than others, but you should have real success with just about all your cuttings. Stick the cuttings in the medium, with preferrable 2 nodes of each cutting in the medium. You can use a plastic shoe box, lid and all to root these too. Look for the thread called 'Easy Propagation chamber' or something like that to see how I do it.

Good luck! This is a great vine to propagate.

Janie

Forgot to post the link...

Here is a link that might be useful: Easy Propagation Chamber

Thank you all for the excellent information! Hope to have more of these vines around the yard in the future.

Sal