There was a guy a few years back in the UK who used to do track days, I chatted to him a couple of times but cant remember his name. Anyway he rode in the fast group on a large Jap 4 and he only had one arm. From memory he had lost his left arm, he was a nice bloke and rode better than a lot of the guys. I had big respect for him and this guy with no leg as well is a total hero for doin what he does. In the same situation I'm sure I would just have curled up, wimpered for my mum and died!!