I'm gonna design a rail for my backyard, but I need some help here. I like the one in the "Mount Mikovits" video with the PVC on the top. I can't really see from the picture could someone explain more what's on the bottom? Also, is it just PVC pipe or do you need like a wax to make sure it slides? I wanna start building this so I can have the snow coming this weekend.
Thanks,
--John