you obviously havent seen Forever now, or and recent videos where people grind the bottom rail and then the top. i can skate handrails the 'regular' way but sometimes i prefer to do somthing different.
What your doing is look like you get a boost with the bottom rail to get to the top rail.
What you could do is get on the top rail in one shot or (2 move) jump on bottom then (other move)jump (not move your free foot) to top rail on top rail.