i usually turn the bow upside down and place my finger 1 inch out on the long rod or extender, the long rod should lie flat, i normally do this and it is a recommended on national squad. But with there being so many variations in bow weight, draw weight, drawlength and different shooting styles it is impossiable to make personal recommendations, currently my bow is balancing 1.5 inches out o the extender. My suggestion is to use about 1 inch as a guide, and alter it slightly to find your personal peference but somewhere between 1 and 2 inches should be where you are aiming at.