I thought the whole point of mam made trials courses was to use obstacles that people actually ride trials on, the stuff in that video would be pretty damn hard to even walk/jump across without it tilting and dumping you off. "even the world champion, jaromir spechny, has fallen." No sh1t, the stuff on that course it too unpredictable to balance on, let alone on a bike. Funny nonetheless. The only good rolling rock there is: