I’m assuming you going to double hull plank. Its only my spin but for the first planking I use box wood. It a little thicker, It steams or soaks well, shapes and sands fine. As for the glue marks sand or rub smooth your going to cover the first planking anyway. The key is your planks are smooth and you have good clean hull lines. (shape) If your going with the natural stained look, which I happen to be a major fan of Mahoney or walnut strips stain very nice. For the second planking I prefer to use .05 mm stripes. Again, we all have our own way of doing hull planking, so this is just my take. MOG