>>lampkin: i've always been very hungry for success i've never been satisfied with what i've already achieved ...i don't like losing - i really don't like losing - people may say it but they don't really mean it. >>reporter: forget losing the championships, in these conditions it's surprising more riders don't lose their heads. this is no sport for the faint hearted... >>the bikes have no seat, riders must stand on the pedals, testing their balance and throttle control. each time they touch the ground - called a 'dab' - a point is scored against them. a clean round scores a zero - the maximum penalty score is five - and they have just one minute to complete each section. >>muriel: riding the river here at scotland's nevis range sixty of the world's top trial riders attempting the seemingly impossible. for many of the competitors, staying on top on this testing courseis only one of the challenges they face. finding the funds to stay in the sport can be just as tough. >>reporter: among those struggling in this poor, but exciting relation of motorsport - five times scottish trials champ