You don't need to jump or anything, just stick as far left as you can go at the end, you'll sail right over without having to jump.
Submitted by Shaggmeister
You will need to select Devils Butt as your course.Then you need pick Half Pipe mode.Next you must score 3,400 points or more to play as Mars.
Submitted by Kane (email@example.com)
When racing in Mt. Koji in the Downhill level continue on for about 30 secs until you go off a jump and land just before a whole lot or rocks. Jump off the next jump and head straight for the log. Railslide that, prepare to jump onto the next rail but press and hold triangle as soon as you jump. Your player should fly through the air for a few hundred metres making it possible for you to do multiple tricks. Distance depends on speed and alignment.(Player has to be straight along the pole, not at right angles to the pole!)
Submitted by by Mr Macky M.J.M