It depends on your rate of turn or turning speed and/or altitude. It's one of those visual images you have to re-learn with every new aircraft. But In my aircraft (about 100-115kts on base), it's about when I can see the field between 11 and 10 o'clock. Sometimes, when I'm a little high, I keep the speed up and turn tighter to lose some altitude.
Last edited by AdamFrisch; 9th October 2012 at 06:39.