Watch the demonstration. I find the braking lines to be the same in TT as in GT4 (ie. when you hit the top of the hill jam hard on both brakes), lean a bit to the left to get the back to step out a bit, then feather the throttle coming down the corkscrew, especially on the right at the bottom or you'll drag your footpeg and fall.
Then set up on the outside of the next turn so you can cut the corner, if you brake before that turn you can be on the gas through it and all the way into the right.