I asked for opinions because I've heard and tried both. I agree that being coached or told to do something, even if physically impossible, may be a good coaching technique. I think that is the case with rotate, specifically hips, down coarse or toward the boat when crossing the wakes. I just don't think it's physiologically possible. Even the photos of Nate's offside his hips are only slightly rotated toward the boat from the direction his ski is pointed. I would love for someone to post a photo of a skier on offside pull behind the boat who's hips are truly pointed square down coarse.
I've given up on trying to get my hips pointed down coarse on my offside, however appealing the idea might be. I can't do it now and don't think I ever could. I like the idea of trying to be symmetrical, holding a position I can get into on both sides.
I try to get good coaching several times a year. It's the best money you can spend skiing IMHO. I always learn something when I get coaching, even if it's what I don't want to do.