"Lash together three 10' poles into a teepee and set it over the cages.
Tie the vine to the poles with fabric strips cut from old socks. I do
it every year in VA and it works quite well."

Here's a picture of TPs over cages taken last June...
http://img104.imageshack.us/img104/7465/toms0zo.jpg

This picture was taken in early August...
http://img455.imageshack.us/img455/1131/00010111qo.jpg

TQ