Re: what did you do to your motor bike today?
Back in the dayz of spectacular dirtbike crashes we used a set of old gm ignition points, with one end of the mounting plate slipped under a handlebar mounting bolt, for a kill switch.
Put a guitar pick between the points to 'keep em separated'.
a small cord to yer wrist...
difference of opinion between the machine and pilot would pop the pick, ground the coil, and prevent zinging out of redline during flite. lol
keep the cord long enough so u can adjust yer goggles...