There's two ways to snap boost:
The first is the least effective and least applicable where you use the snap when transitioning between two vertically offset billboards.
The second is widely applicable and VERY effective, landing perfectly on the corner of a billboard will cause you to rocket off parallel to it at insane speed.
TIPS FOR KEEPING SPEED:
MANUAL/SLIDE!!
Don't jump off rails
Don't use boost or boost tricks
Don't double jump
