[xaMdaM]

OK, I saw that same planking at Home Repot the other day. Yeah, it's rough sawed. and does look kinda' snarly.

If you can find a local woodworker, (drive through a neighborhood with your windows rolled down and listen for the sound of a planer and/or cussin') with a planer. If you can get that surface milled down to a smoother finish, without loosing too much more thickness, (maybe another 1/16"), I think that will get you where you want to be.

All of my lumber is just planner milled, and while not smooth sanded, it's definitely not rough sawed, and is probably the "look" that most folks, including yourself, are looking for.

But, Tung Oil might do the trick if you wanna leave the rough sawed look.