Re: Thoughts on jib sheeting inside the shrouds
If you can physically do it (ie. your side stays actually let you) it's a very good idea and used a lot on your average racing yachts. Since you've not posted any pics of your side decks, it would help to know what sort of boat you have.
You don't need extra lines in the cockpit - it's only the track you need to install. You move your existing jib cars and sheets to the inside track whenever you intend to use it.
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."