1080 Snowboarding - N64 - OOB locations

Crystal Lake -
Jump over the fence at the start
Jump up on the right ridge near the fence
Jump from the middle shortcut to the right ridge after the second fence
Left path, after houses - jump over the red fence

Crystal Peak -
Jump onto the left wall after the first zig
Jump into the third arch of the tunnel
Jump onto the ridge that forks the path, then launch over to the Giant N

Golden Forest -
Ceiling clip - get enough air on the first zig to clip to the left path
Jump onto the right wall on the lower ice river to go past the barricade and fall OOB

Mountain Village -
Jump over the right wall at the very start with a very well timed Mute Grab
Clip into the ramp house and fall through the floor
Take the rock ramp and hold a trick to launch over the right wall
Clip through the left wall of the path that leads to the road from the cave
Jump onto the right grass embankment from the road
Use the yellow ramp to get onto the house on the left
Climb up the road using a series of slightly angled forward thrusts
Last two ramps - both can send you OOB. The one on the right can place you at the finish line
If you retire, you can jump off the right side of the course near where the road meets the right hill

Dragon Cave -
jump onto the right side of the course before all the Lamar signs, and forward thrust until you clip into the main starting area. Keep forward thrusting until you are behind the starting area. Highly recommended to fall off the back or you may clip back into the course
Left fenced cliff - it's possible to start clipping into the floor if you hit one of the fences right
Ceiling clip - get lots of air using a held trick or big combo by jumping between the two signs - this may place you back where you jumped from or a bit further down the mountain
Lower path - Ollie up onto the first big rock you see. The top of the rock has no collision.
The bridge - jump over the bridge with a well timed spin trick to fall through the floor
The TV tower - use an angled piece of terrain near the two towers to hold a grab up onto the left tower.
Rail house - might be possible to clip inside
Ledge at end of rail - weird clipping, may be possible to clip into floor here

Deadly Fall -
Right side of starting area - possible to just barely clear the right wall holding a trick
left side of starting area - should be a high cliff on the left side you can lunge up
Ceiling clip - if you jump and trick at the right spot while climbing the right wall after the ice pipe, you may clip back onto the course
mackz clip - on the pillars
If you retire at the end of the course or hold a trick over the finish line, you'll slide OOB

Air Make/Half Pipe/Training - none yet, sadly.

I have videos for most of these saved on my computer, if they're not online. I'll start combing through the clips on 9/25, possibly late on 9/24 if possible. mackz's clip was the first clip to be useful for time attack. Most of the rest are great in trick attack or, at the very least, swag 100Ks. - arcticfox