I finally got around to doing what I was always going to do someday - convert my old halyards into rope mats.
If anyone's interested, you can find photos I took whilst making my own Ladder Step mat here:
I hope this helps
From RFC 1925: "(3) With sufficient thrust, pigs fly just fine. However, this is not necessarily a good idea. It is hard to be sure where they are going to land, and it could be dangerous sitting under them as they fly overhead."