Don't let those guys put you off Pittsy,
There's nothing quite like the buzz of learning a new skill on equipment you've made yourself.
The first time I saw a decent stunt kite in the shops I was blown away at how mean and
purposeful it looked. When I got home it took me about an hour to knock up a frame, staple some builders plastic to it and rig up two strings. I learnt to fly stunt kites on that pig of a kite, when I finally upgraded to a really expensive one it was like I'd died and gone to heaven... but nothing beats that first buzz, when you take it out for the first time

What material (Dacron? Monofilm?) and design (Loose leech?) is the sail? Do you have a photo?