it's cool, but its basically a park rail: almost no consequence if you fall. the first urban rail i did was almost that long, like 4 feet high, and had stairs. try one like that, its a rush when you do it, and is way more sick looking
the reason i didn't do the first 10 ft is cause i need an in run to get speed, there is a rail perpenticular to that rail that didn't allow us to make a long inrun so we had to just jump on, or else i would have slid the whole thing and gotten more speed, next time, look around before making stupid comments