While I have never done this, I would assume (sorry) that the process is the same for removing the skin from a salmon fillet, but perhaps necessitating a bit more strength.
Pick a short end, from about 1/4" up, slice down towards the opposite end at a 45 degree angle, making a 1/4" high triangle, but don't cut through the skin. Then, using the lip you created, hold it down, and with a fillet/boning knife held parallel to the cutting board, have at it.
FWIW, back in the day I hunted a bit in Canada, where a Canadian guide is required for American hunters. The guide provides meals, and we had bacon almost daily for breakfast. I recall the bacon was the only I've ever tasted that had the skin on it. It was unexpected, but not unpleasant. With a bit more cure time, I suppose all the cure made it through all the meat only through the flesh end.