because I was waiting for someone to come on with a better idea than what I do in this situation.
Nailing into the tounge or the lip will surely crack pine every time. I do not even think about this. I feel that you HAVE to nail into the meat of the board to keep it in place and to prevent bowing.
I mark my studs all the way up the wall and use 6 or 8 D finish nails. I then counter sink them and then putty in the holes. Sand, prime, stain, and seal.
I do make sure that my putty is stainable, as many are not and will show up like a sore thumb.
I put two nails into each stud about 2 inches apart on a 8 inch plank.
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