Replying to Making a jib tomorrow, just a few questions

The build a jib cult isnt that livlely considering im gogin to make this jib tomorrow, so i just had a few quick questions:

1. Do those green pipes that some constructions sites use work well to slide on?
2. Where should i make the drop in, off my buddies deck, or should we make a freestanding one?
3. If the ice rink doesnt have any snow out, can we use that orange fencing that most contrusction site also use?

Thanks for any answers and tips