Yes you could build one in about an hour (of course I would prefer you not too but with anything new (soft kites, sport kites, new tricks) the time outlay is in the idea, prototype development and production. It has taken me just under 2 years to get this thing nailed down and so you can see why I get a little sulky with comments like above even when they are well intentioned as I believe this one to be. However, this is a whole other area of conversation that is better off in another thread as it involves so many people and views.
As for the kite, I have a better challenge for you. As kite manufacture is something you enjoy, try and push kites on by making some thing new. After all, where would be if everyone simply copied the North Shore Radical rather than pushing it to the next level. Without Don Tabor and TOTL where would we be with dual line kites?
You never know, if you come up with something good I might buy one
I wasn't planning on copying, I was just noting how weak our dollar was when compared to the effort. I totally understand the R & D that goes into perfecting a design or even modifying an existing for your own character. I'll be on the list to purchase one as soon as our $ strengthens no doubt about it.
Anyhow, the orange, white, and green kite in the bottom corner is something I came up with after scaling from a plan on the large kite, adjusting build techniques to work with the small seams and modifying the panel setups. ;-)
http://farm1.static.flickr.com/23/39671974_e8f12a6e35_o.jpg
Back on topic, are more available?