Husker, I either cut slices across the Potato enought to leave it together (use chopsticks on either side to prevent cut through), spread the parts and add S/P&Butter , place in a piece of foil to make a boat and smoke till tootopich soft ( 1.5 to 2hrs.) A little rub on them helps the taste .
Or I cube Potatos and Onion and a bit of Garlic in a foil paoch with S/P& Butter and place in for 2hr., most delicoius... Potatoes can be replaced with Squash, Yams , Carrots ,or most any root crop.
Temps. must be over 200° to cook in a timely manner. This works on a Grill also and does well to ammend the meal.
Have fun and...