Best support for wisteria

I hate to be the one to tell you this, but did you know that Wisteria gets 30 feet high by 20 feet wide? The only way you can grow it effectively in such a small space is to do what a friend of mine has done - she has a 4x4 inch post, eight feet high, with a cross six inches below the top sticking out about six inches either side, and with strong lengths of wire running up the post to the top.She has trained the wisteria up this post by constantly hacking it back, being absolutely rigorous about trimming it all the time. Unless you want to let it ramble over the roof of your studio. guess that's an alternative. Its a twiner, so will happily twine through trellis.