Thanks guys, I'm about 70kg /(11st?) so It sounds like I'd be better off to look for a slightly bigger kite. However where I live its is quite often a lot windier than I dare got out with my bullet, because I get randomly lifted vertically when the kite is at the zenith and a big gust come along!
When people say about the quick turning of a 10m venom (I've since found out the one I was offered is a 2007 model), does anyone know what this is like compared to a 4.5Bullet?
Thanks guys, time to hit the net again to find a bigger venom