This was my attempt at creating a reverse lift hill coaster. I made it simple and built it rather quick. To carry the train up the hill I put a 45 degree connector on the track and that would hook on to the train.
See a video of Shuttle Looper in action
Coaster Type: Reverse Incline Launch Looping
Height: 4 Feet
Inversions: 1 (vertical loop)
Sets Used: About 2
Other: Goes forwards and backwards through the loop