Try using 2 smoke tubes (I use the 12 inch A-Maze-N) filled with wood chips. Pack them down tight and let it smolder. It will smoke for about 3 to 4 hours. You'll get some nice bark. These are photos from a few days ago cooking 2 slabs of ribs.
Using this method, I'm also getting even better smoke flavor than on my WSM. I know it's hard to believe, but if I can get this flavor with wood chips, I won't be smoking on my WSM any more.
Also, it's important to go by temperature for tenderness. The fat renders around 200-204 degrees. The probe that came with your Traeger will help with determining that.