5. Backside 180 on
Mess up a backside 180 on and you could be served a nice rail taco (which hurts by the way). The trick to locking onto these ones is to kind of catch the side of the rail with your base and then roll up onto it, as landing to flat will most likely see you slip straight off the other side.
Like the frontside 180 on, you have to figure out how far away from the rail you need to be to land on it sweet and like the front 180 on, these require a fair bit of commitment.