I've been using a retractable leash, Gath Visor Helmet and an impact vest for 3 yrs now and have had no problems at all, sure it's hit me a few times but that's why you wear a helmet and impact vest. Now i know I'm going to cop sh!t but honestly that injury wouldn't have happen if Jowett was wearing a Gath Visor Helmet and an impact vest too. I've been hit in the head with my bored and the helmet does its job like its supposed too(I write that with a few twitches of the head). i know there's still an element of danger with the leash, however we're all responsible for kiting with a bit of common sense, unfortunately some people learn the hard way...... Jowett 35 knots of wind demands respect one way or another......

Sorry to hear of your injury.
Jowett I'm curious to see what and where your injury is, can you please post a pic?

Gath Visor Helmet
http://www.gathsports.com/products.php
Impact vests
www.kitepower.com.au/catalog/category_316_Impact_Vests__Helmets.html