As for MKDS thread, best RR MKSC strat is:
http://youtube.com/watch?v=cFnNByMJ_2E In the first jump you have to shroom and land exactly on the tight white border.
Is tighter as it seems and you have to timing very very well.
Landing on the white border is not enough, you have to do having the right direction and turning in the air because the next landing area is to close if you simply go straight (you cant choose how long is your jump, you have the make some air turn in orser to avoid going too far).
Following bounces are not that hard, until the second 13/14 of the video: you neeed good timing to take the accelerators while coming out from the right, and at second 14 i really dont know how to jump and land in the right way.
With a mushroom is really easy, because you can take the turn a bit wide and slide on air, but w/o mushroom you can barely land on the other side going straight. The problem is that you neeed to turn 90°.
I think this part is the most difficult of the track.
At the end in not very easy to land directly on the accelerators, but not hard as previous parts and it exists a alternative path that costs you only few hundredths
BTW try it with a emulator, this is not a track that requires the full game knowlodgment..