At the end of a stage, begin backflipping as soon as the "Stage Complete!" message appears. This will result a few extra points without the risk of damage.
Gaining speed
When about to go down a hill, drive really slowly using [Down]. After big hills there are often jumps, and if you just get air, you will not get any speed. Make sure all your wheels are on the hill to get maximum speed.
Jumping
Keep your wheels flat on the ground when approaching a large jump. If you bounce before hitting the jump, you will usually not clear the large hills.
