ROFL… nothing short of a tree will instantly stop you thanks to gravity and physics! Skiis or snowboards, they both stop the same way!
and on the broken bones part… tell that to my fience sitting at home for another 2-4 weeks! /
She has skiied for ever too, and a friend of hers wanted to learn how to ski. so she figured she would try snowboarding and learn with her… yeah that worked out well! She did EXACTLY what PSI2High said! she was getting the hang of it and went to stop, hooked and flew backwards, put her hand out on instinct and snap.