Well, I took a few shots of it early on. It's almost finished now; I hope to have it done by the end of January, when our model club has its next meeting. I don't have facilities to post photos in the Forum, but if I'm satisfied with the final results I may send some pictures to FSM for its web gallery. (The management is always encouraging us to do that.)
There are no really good contemporary references for the rigging of Viking ships. The Gokstad Ship is especially frustrating in that regard, because there are scarcely any hints - even vague ones - of how her rigging worked. Six good-sized wood cleats, three a side, are nailed inside the hull planking at the stern. That's it. There are no holes or other evidence of rigging being fastened to the stem or sternpost, or anywhere along the sides.
Among the books I've found, the most useful when it comes to rigging probably is the Osprey volume, Viking Longship, by Keith Durham. (It's also available bound together with three other Osprey titles in a nice paperback called The Vikings: Voyagers of Discovery and Plunder.) It contains, in addition to the lengthiest discussion of rigging I've run across, some fine modern paintings and photos of lots of modern reconstructed ships.
Some scholars have suggested that, given the relatively short mast, the Gokstad Ship didn't need much rigging other than what was necessary to control the sail. There are arguments against that theory, though. Every single surviving contemporary representation of a Norse ship (except those that don't have sails or masts at all) shows some evidence of rigging - usually two or three shrouds per side and a stay running forward. (And the guys who sail the full-size replicas seem to have no doubt: a Viking mast needs shrouds and stays.) There had to be some sort of halyard to raise and lower the yard, braces to swing it, and sheets to control the lower corners of the sail. That's just about the minimum. It seems likely that there also were tacks to haul the weather clew of the sail forward (though the "bietas" poles would have taken on some of that function), and there's a long tradition among Scandinavian square-rigged sailing craft of a tackle called a "priare" that hauls down the center of the bunt of the sail. Clewlines and bowlines are also plausible, and some scholars (and designers of full-size reproductions) have fitted reef points to the sails - sometimes close to the bottom, apparently for the purpose of bundling up the lower part of the sail (rather than gathering the upper part against the yard). It would be a mistake to assume that all Norse ships - even all those of a given size and date - were rigged identically. There's plenty of room for interpretation and outright guesswork. I don't think there's enough evidence to pronounce any reasonable reconstructed rigging configuration "wrong."
Some of the old stone pictures show the sails covered with diagonal lines, forming a diagonal checkerboard pattern. This may be an indication of how the sails were decorated, or it may be a representation of either cloth, leather, or rope reinforcements stitched to the fabric. (It's likely that Viking sails were made of wool, which tends to become slack and baggy - especially when it's wet.) Some pictures show a net-like contrivance hanging down from the foot of the sail. That may be a continuation of the reinforcing structure, or some separate rope mechanism for furling the sail.
Frankly I haven't yet figured out exactly how I'm going to rig my little model. Other than those six cleats (which I figure could have taken the braces, the sheets, and the halyard), there's no obvious place to belay lines. I can think of three possibilities. One - the upper ends of the Gokstad Ship's stem and sternpost are reconstructions, the originals having rotted away because they projected into a layer of more acidic clay in the burial mound. Maybe the original stem had a hole in it for the stay. Two - the "deck planks" of the Gokstad Ship are in fact short pine boards that lie loosely in rabbets on the upper sides of the beams. Maybe when the mast was set up and the sail was set some of the planks got lifted out, and lines got secured to the beams. Three - running along each side of the ship, just under the gunwale plank, is a piece of wood with a series of notches in it. Its primary purpose seems to have been to secure the straps that held the shields in place outoboard (modern writers call it the "shield rack," and Revell did a beautiful job with it), but there would have been plenty of notches left over - especially if the shields were stowed away, as they would have been when the ship was under sail. It's possible that some rigging lines were belayed through those notches.
Whatever the answer, it's clear that almost all the rigging was temporary and would be struck when the mast was lowered (as it frequently was). The artifacts found with the Oseberg Ship include a number of wood toggles, which would have been an effective means of setting up shrouds, for example, in such a way that they could be loosed in a hurry. And if the toggles connected the shrouds themselves to strops that were secured either to the deck beams or to the shield rack, the shrouds could be adjusted in tension and angle by shifting the strops from one beam (or notch) to another.
Revell provides a pair of beautifully-molded, ornate blocks that match the ones in Plate IV on the German website. Apparently there need to be two more. They seem to have been designed to make the ropes running around them jam - like a more modern deadeye. I figure they probably were used for standing rigging - stays or shrouds. Photos show some other, much simpler wood blocks from the somewhat older Oseberg find; I've been working on scrap styrene reproductions of them, along with some little toggles. What I eventually come up with will be, at best, reasonably educated guesswork. But that's what makes this kind of model fun.