We rigged the Nacra 5.0 the other day with a new jib, & roller furling. It turned out we didn't need a new fore stay or pigtail, this might work for others too.
See the last 2 items of the album.
http://www.thebeachcats.com/pictures/?g2_itemId=88268
E C Hilliard
Nacra 5.7
Bombardier Invitation