Not wood, it's really soft and super easy to to catch an edge in. My backyard jib that I have is made with pvc pipes and it works really well and is super cheap. HDPE (high density polyurethene) works amazingly but is expensive and a sheeting. Puckboard (hockey rink boards) works good as well so go to your local rink and see if they have some old stuff. The downside to puckboard is it can get sun ripples. like my mountains boxes did.
Ask for an ivite to the build a jib cult.