I have just stumbled across this topic. I am wishing you Good Luck with the SNES tracks! I have played them back in the early 1990s on the original Super Mario Kart Game for the Super Nintendo Entertainment System - I still have them!
EDIT: In terms of Mario Circuit 2, my favorite and probably your favorite trapping spot is the jump. Run into an item on it, you fall and on the SNES have to repeat part of the track, or get picked up by Lakitu I believe on the 3DS and probably your project. I also remember the feather item from the SNES that makes you jump farther and you could use it to skip part of the track out!
Last edited by Sprinter; 02-23-2012 at 02:05 PM.