After much experimenting, I found that the band set at the height in the picture resulted in the best boil times using only .5oz of alky. I was getting rolling boils at 9.5mins, and effective burnouts around 12.5 mins (the flame would trickle on until past 14 mins, but it wasn't hot enough to do anything). The key is to leave the lid on and not check it unti you hear it boiling. Premature checking cut down my efficiency a lot and I would only getting bubbling boils before burnout. Hopefully you still have the red star left on your heiny pot...if not, I can bring out a ruler to give you the exact height.
Note: the black marker line on the tip of the red star merely marks the 2cup capacity point on my pot.