John,

There is only one Hole on our foil - so on ours it would be the aft hole. Looked at a couple of 5.8's in the lot and one has the two hole setup, The other just had one must have been a upgrade in newer years - manual doesn't help either.

as far as the jib set-up goes maybe this picture will help
If not I'll try and answer any questions you have.

http://i117.photobucket.com/albums/o71/ghhm43/jibattachment3.jpg