Replying to Rail balance help.

Sorry im new to the site and i dont know if this is the proper place to put this.

well i just started doing rails and i have been doing fairly well on double barelled and flat bars. But the other day at my grandparents i found some pvc pipe(their neighbours are doing renovations and it was in the dumpster outside.) So i took it home and set it up in my backyard, since i have no 2x4's to actually build a make a proper set up, i just found some small blocks of would to prop it up above the ground( its around 20 cm high) when i tried it out i kept falling of half way i tried to session it for and hour and i only made it the whole way a few times. I then sessioned it yesterday and today and am still having the same problem.

is it usually hard to do rails/ piepes taht are large in diameter or do i just suck, lol. any tips on improving balance?


oh and i only ave around 13ft of flat ground to get speed to get on the rail. Is this also a problem.