Sweet, I always like biking stuff. That's a definite improvement, and I liked alot of the shots. I agree with irishmark about the colour thing. Two other things; try and maybe get some close angle shots of the rider, maybe even doing up his helmet or something, and second is use a tripod. There was just a couple shots were I saw some shake that would've been better without it. Good improvement keep it up. And yeah, there's a big problem here too with kids ruining the trails, and then no one really wants to big trails that are just gunna get wrecked, so big anti-biking circle goin on.

Peace