[Brian Duff]

Two common techniques , used with different lines, are as follows.
If you are using polyester double braided line and do not plan on using the unit to fly that 150% reefed, then you can just pull the core out of the first 25-45 ft ( or LOD of the boat really ) of the furling line and cut the core off there with a slight taper, and milk the cover back down so the core disappears inside. Some use a whipping to secure the core near where it is cut off inside the cover, some do not. This 'flat' line can take the least amount of space on the drum using just line.

If the furler is to be used as a reefing gear, and there is enough room on the drum, I recommend using a spectra core/polyester cover line. Strip the cover off for the LOD of the boat back from the drum, and you will always have big grippy line in your hand, small but strong line throughout.

It was at one point common to use wire for the first length and the splice a rope tail on that. This makes for a big difference in diameters .

What splice would be best to join 3/16" spectra single braid to something like 7/16" double braid poly ?