adding a jib furler

I just purchased a jib furler for my Nacra 5.7 and have some rigging questions
Will I need to cut down the forestay? I have a hobie 18 furler wire setup with the pigtail etc. how would this be rigged?
i also have a short pigtail that I got with the furler. is this all I need?
If anyone can tell me how to avoid the trial and error portion of rigging this it would be greatly appreciated.
Also, the jib is zippered to the forestay, and therre is a small loop at the head that attaches to the jub haulyard. How much tension do I need to put on this? It dosn't look like it will take much abuse.
Pics of your rigging would also help greatly.
Thanks