Replying to Canon rail

hey cult! i was thinking about making a pretty sick winter backyard settup ( including my actual summer setuup ) i will add a canon rail probalby a down flat down and probably a c box so yeah i was wondering how to make the snow hard like in the park for example ? so i can get my rail solid in it! ? and my other question was how the fuck can i make / find a canon metal square rail ???? ( like this one but set in up  :  http://www.youtube.com/watch?v=PudnRiPCPw8&feature=related )

if i can't get one like this i would like t oget something like that  http://www.google.com/imgres?q=canon+rail+square&um=1&hl=fr&biw=1280&bih=792&tbm=isch&tbnid=3k9ATjsg0jN2EM:&imgrefurl=http://www.downdays.eu/freeski/18/articles/kenworthy-and-logan-repeat-success/%3Flang%3Dfr&docid=W-Spug424Lsd0M&w=3000&h=2000&ei=hTh5ToqSIqTE0AGimKGmAg&zoom=1&iact=rc&dur=534&page=1&tbnh=138&tbnw=207&start=0&ndsp=21&ved=1t:429,r:1,s:0&tx=107&ty=34

but how ?

and my last options is making the rail out of 2 pvc pipe

plz help me NS :)