GUESS WHAT GUIZ?
I can make the Daisy Cruiser shortcut reliably!
(with Clown Car. No such luck with Train or Egg1.)
Now I decide whether I should change my main just to troll on one track.
http://www.youtube.com/watch?v=leXiwtX1NB4 - This is what explained it better. You need to slowly move forwards and hit the second brick of the orange/white rail. If done right, your kart will be 3/4 of the way inside the brick and you will fall down. At 0:03 you can see shyguy embedded in the white brick. This is what you're aiming for. Don't fall at full speed.
I can make the Daisy Cruiser shortcut reliably!
(with Clown Car. No such luck with Train or Egg1.)
Now I decide whether I should change my main just to troll on one track.

http://www.youtube.com/watch?v=leXiwtX1NB4 - This is what explained it better. You need to slowly move forwards and hit the second brick of the orange/white rail. If done right, your kart will be 3/4 of the way inside the brick and you will fall down. At 0:03 you can see shyguy embedded in the white brick. This is what you're aiming for. Don't fall at full speed.