There are two threads going asking about N5.8's w/ one being a N5.8NA .... so we will try to answer all questions here in a single post ....

Ok, I do not have a N5.8 but I copied a system I saw on a N6.0NA and installed it on my P19MX w/ some mod's ....

Now the N6.0NA and N5.8NA had "bowfoils" w/ lowwer attachment points for their jibs (longer jib luffs/bigger jibs)... but all models could be rigged w/ jib luff tensioners. The Nacra jib halyard at some point went down the front of the mast to a jam cleat ... that was changed to running the halyard back down the jib luff inside the zippered pocket and securing it at the forestay adjusterplate. So that set's the jib hieght, (I use 1/8" spectra for a jib halyard w/ a sliced loop that using a clevis pin is "pinned" @ the forestay adjuster, Ok? The head of the jib is secured w/ a sm shackle tied to the halyard.)

Now the Jib Luff Tensioner System: This system is adjustable from both sides, and allows the jib luff to "tack" from side to side for proper entry into the wind. I use a "snap shackle w/ swivel, that has a Harken Micro Block attached to the bottom of it to secure the jib to the boat .... I use 1/8" spectra that passes through the block, parallels the bridle wires down to the bridle attachment points on the hulls ... there replace the clevis pin using a sm twist shackle (w/ captive pin) and a Harken Air block, I pass the spectra through the block and then continue to the front crossbar where I have a camcleat mounted just "inside" the hull on both sides. Please note that I increase the line dia to 1/4" on the run to the camcleats so as to have better cleating in the camcleat. This system is basically the same concept for the "NA" models w/ bow foil, see explaination below .

Now I will back up and explain what I now about the bow foil. The Nacra 6.0NA & 5.8NA where set about 12" above the deckline, Ok? I set mine on my P19MX at 10" as I was tight for luff length ... My bow foil has a 1" pre-bend to it, so in effect My bowfoil is only 9" above the deckline. I do not know the pre-bend in a 6.0 NA Bow Foil. I origonally had wire pigtails made up but they quickly developed fractured strands as they were so short ... so I now use 1/8" spectra (looped around 3X's)for the pigtails ... Please note, I installed sm shackles at the attachment points at the ends of the foil and bridles to hull attachment points. To keep the foil centered I again used some 1/8" spectra and tied two diagonal crossing lines from side to side in an "X", (foil port end to starboard hull bridle point... foil starboard end to port hull bridle point)

When I purchased my bowfoil it was rigged for a jib luff tensioner system .... it has a cheek block mounted on either end on the top and has a padeye w/ a Harken Micro Block on either side of the "pelican striker" riveted to the bowfoil using the same holes as the pelican striker, so all I needed to do was re-string the jib luff tensioner through the blocks on the bowfoil. I just used a smaller swiveling block w/ a small shackle to connect to the jib.

That's how my P-19 MX is rigged today as it sits at the yacht club ... Pic's would be so much easier ... I just don't have a digital camera ....

To intall a spin pole I modified the diagonal bracing lines by installing two padeyes on the bottom of the bowfoil for attachment points just off the centerline allowing enough room for the spin pole on the centerline,( this way I can remove the pole w/o re-tieing the bracing lines)

Hope this information is helpful

Harry Murphey