Spuds are better cooked over higher heat and wrapped.
Here's an interesting recipe:
Potato Bombs:
-Core a medium baking potato down the center with an apple corer, save the core. Make a big batch for guests...they rock.
-Stuff the cavity with whatever in the world you might want stuffed into a spud....use your imagination.
-Plug the holes with the reserved cores
-Wrap the spud in bacon, foil tight, and cook about 375, turning halfway through for and hour or change until done. Not an absolute measure of done, I probe for tenderness to determine that.