http://www.boardwise.com/p-3279-sks-kunzmann-mini-snowboard-screwdriver-5-tips.aspx
Something like that does the trick, i have one similar a jimmey tool or something its called, yeah ul feel it with you fall, but its not as bad as having a screw driver in ur pocket to stab urself with.
Go to North America, they have on mountain tool stations everywhere, yay!
i carry mine in my lower leg p[ocket on my westbeach pants , and last week came in so handy , while riding down a run, i spotted a skier ( sorry for swearing|) and a boarder waving his arms and shouting has anyone got a screw driver blah blah blah ...so i8 rode over ...only to find it was a scuk member ( polo and his gay ski lover ) i fixed his ski ( sorry again ) binding and rode away into the day light ..... you still, owe me beer polo