the cult build a jib had tons of answers for you but ill give you some suggestions. astro turf is really good but you ill need to keep it constantly wet. there is also an orange plastic fencing that works fairly well and is a cheaper alternative to astro turf. as for PVC its basically the best material you can get. go with the white or black PVC as its slides really well and holds up fairly good from chipping. hope that helps.
Skiing is sick