Today, I found yet another Skoldehamn hood tutorial. This one is geared toward people interested in attempting to make their hood as faithful a copy of the original as possible. The tutorial was prepared by Eleanor Deyeson, an SCA member. Her tutorial may be found here.
Eleanor's tutorial is specifically geared to people who are not only planning to use the pattern of the original but are also prepared to use the correct types of handstitching that the original employs. (Note that Eleanor makes hood "kits" with pre-cut fabric pieces for making your own hood; they are available here; however, the ones available at present do not include wool fabric, which the original used.) She sees the particular stitches used in the original hood as eminently practical, as is clear from this comment from her tutorial:
I hope you enjoy learning about these various finishing techniques. Each has a functional effect, with any decoration as a bonus secondary effect. The stitching on the gore and back seams helps the hood lay flatter and the hood just looks better. The cord that is couched along the face opening helps stiffen the opening, and prevents friction from affecting the cut/folded hood edge. The “mohawk” on the top stiffens the hood, and possibly provides some comfort benefits while wearing in a cold, windy environment. Remember that the original location is on the same latitude as Point Lay, Alaska or Murmansk, Russia.
The last point made in the above quote is particularly relevant, as many Viking reenactors and SCA participants are making clothing to wear in areas much warmer than Skoldehamn, which is located inside the Arctic Circle. There is nothing wrong with making clothing for historical events based upon original finds, but it can be important to keep in mind that the conditions you will face at your event may differ radically from the conditions in which the original item was used.