This all depends on what rails you want to do. the cheapest would be pvc, I built a 20ft shotgun for like 30 bucks. if you want to hit your rail during the winter i would recomend buying the grey electrical pvc (it shatters less). also your setup will work the best if you can put it (especially the rail) on a gentle down slope. As for surface that green shit sucks it slides ok, it is the cheapest though, i used powder pak (much more expensive) and i works much better than the green turf. Good luck and hope that I was helpful.