Hi Rehab,
Because pellet smokers use convection/heat/smoke (indirect smoking) to cook food, no rotisserie is needed! If you have a rack for your food to sit on (like the MAK upper racks), it's like smoking rotisserie style (but with swirling heat and smoke on all sides).
As far as I know, I have not heard of any of our customers ask for/need a rotisserie option.
Of course, I don't want to speak for other pellet smoker owners, so hopefully someone will chime in soon
Scooter - you mean this one? http://www.pelletsmoking.com/hall-fame-recipes-22/juicy-chicken-5092/?highlight=Zephyr
@ Rehab - I am a spatchcock chicken fanatic (the only way I cook my birds), so maybe I'm not the best one to comment on rotisserie/self basting. For me, rotisserie is more of an even-cooking method while glamping or at parties so nobody has to flip the meat/be tied to the grill.