Jim, first no SO. Assuming I found the compass after I had camped and knew where I was, but snow prevented me from seeing very far to get back and the tracks were covered, I could get my coordinates in relation to where I needed to go using my map, send my partner out ahead of me in the direction of travel on the correct tangent, have him stop in the line of travel, I would then move up to him, repeat. Very little compass use so I'll have to go by feel here. If I was alone and could use or see some trees, I would use the trees or prominent rock features or the like. The one time we did such a thing was in the Survival class and I thought it was too simple. I know there is more to plotting things out, declination and so forth but never have taken a class or been shown.