lol, i just thought that some people that would have sense would realise in a sport that relies on back brake hold and bite would realise that having a smooth rim is a good answer, you mate must be an idiot at settting it up. EVERY bike ive been on with a monotrial has worked amaazing, ten times better then my front maggie, ten times better then my front vee, have a go on some ones bike that can set it up propley them selves. when i felt sam olivers brakes they felt amazing loads nicer then a maggie not as nice as alis vee brake though. you never see sams brake slip though in comps when it does matter