KB,
Think you would get a better result following the method on the videos that you posted. This is kind of what I was referring to back when you started this discussion, when I recommended buildups with resin. You've got some very weathered teak that looks fairly decent after aggressively sanding. Just as the narrator in the video explained, with a couple coats of epoxy you're going to get a quick build that will fill and "level" the remaining irregularities in the weathered teak. Then coat 3 coats of your favorite varnish, cetol, etc. I think using the epoxy buildup method, especially on weathered teak, you're going to get a better result thats going to have better UV and moisture protection, and have a final finish that's going to have more depth and a much smoother surface. Also, with the epoxy base coats, you're going to prevent further loss of wood fibers. Even with the 8 coats of teak oil that you applied, there is still quite a bit of irregularity in the surfaces that you coated. Definitely looks better than what you started with; however, with the epoxy coatings, the irregularity in the surface would be eliminated. Teak oil would be applicable if the teak wasn't as weathered.