Some roller coasters are a lot easier to build in a gentle style than others. The best are the Wooden Side-Friction Roller Coaster, Virginia Reel, Steel Mini Roller Coaster, Single-Rail Roller Coaster and Steel Roller Coaster. A Shuttle Loop style roller coaster can easily be adjusted by changing the launch speed and adding or removing turns. Roller coasters with two stations that act like a transport ride are also very attractive if kept gentle. Beware of space, however, as the park may become overcrowded as you draw closer to your 1,200 guest objective.