I was going to use 3/4" thin wall PVC for this but they don't have any in this area. All I could find was schedule 40 PVC and it's kind of heavy. I did find a roll of tubing that is use for hot and cold water plumbing that comes in a coil of 100'. This stuff is pretty light. One nice thing about this stuff is I don't need to splice it.
The coil didn't want to straighten very easily so I used some heat to coax it. I got it as straight as I could then used the same technique Eric Newton outlines in the manual to attach it.
I was able to finish up one wing and start on the other,
