Primary Winding Techniques

["Kevin, the one with the incredably long email name that takes up a lot of space on this line. Sometimes you have to wonder just how much space you really need in this field anyway. :)" <teslacoil-at-mindspring-dot-com> (by way of Terry Fritz <twftesla-at-uswest-dot-net]

Hi all,
I am finally going to get back to working on my big coil. (15-30KW)
I am going to use 3/4" copper tubing for the primary.
I have never wound a primary with this large size. I have a couple
questions.

1).What suggestions do you guys have for getting the tubing down neatly.
2).Do you typically get 1 big 150 ft roll or do you get 3 50ft ones and
solder couplings.
3).What is a realistic spacing between turns should I be working with for
this size tubing.

Thanks for any input you may have,
Kevin