I'm not sure how the H16 furling system works, but you may want to check out the H18 system. Just look in the support section and under the H18/18SX assembly manual. It will be easier than me trying to explain it here.
I don't know how common H16's with jib furlers are, but for economic reasons (keeping as many parts common as possible for spares) I would not bother with it. In teh five years I had my H16 the only time I wished I have a roller furling jib was when I was on my 10 day camping/sailing trips where I would leave the boat set up on the beach the whole time. I just didn't want to have to raise two sails for my morning sail
. So I got a little spoiled.