Whilst the mini guide in the above solution is good, you can beat all the pro's apart from Annie with the nose/tail rides. Got the idea from CAFF31N3 and BurnYourEyes44 (added for recognition) here:
http://www.xbox360achievements.org/forum/showthread.php?t=15...For the Travis score, go through the first gate scoring whatever then detour around the rock on the right hand side of the gate. bear left to drop back towards the third gate but stay on the right hand side of the valley and aim towards the rise with trees on top. Start nose riding from pretty much the top of the rise down, and you should get huge points - although you may hit trees etc, and it might take a few goes.
Wolle Nyvelt: Almirante Nieto. Go through the first gates, until you reach the one that requires a method air. Go through the gate (it's at the brow of a hill so you can get the method air trick in with a hucked spin for points) then hard right towards the brow of another hill. When you get reasonably high up on the brow (don't go over it), pull back on the left stick and aim yourself down the hill to the next gate (which will be a tail ride). Start tail riding down and through the gate, then continue to tail ride down the rest of the mountain (don't bother steering). You should break the points barrier quite easily.
Tadashi Fuse: M. Fuji. You start off with a nose ride/nose butter. Just by pass the gates again until you get a massive score. I think I got to the IndyMute gate (gate 6) and had crack the score.
Hope this helps - I've literally just cracked the 1000g's on this now. thank god.