I took a guy with an X-mart bike out to a nearby intermediate level trail to expose him to real mbting. We were going pretty slow, for his sake, and we approached a v-tree that I had been through many times. I told him it would be easy--but I'd never been through it slowly. We were going too slow, I ended up at a standstill midway through it fell to the left and tacoed my rear wheel on the tree! What a way to impress and encourage a new guy into MTB riding. Oh well, he's still into it. He'd get a better bike but he's about to move to Russia.