Well, I made a pretty cool vertical coaster...just made a TA2K. Straight track into 90 deg. up, 90 down, then I made it more interesting that a TA2K. Of course, I had to use a trainer to get the launching right, but it launches at 103 MPH to make it up the 220 foot hill...I use the B&M sitdown trains on it.
:)
Jman