Not so sure about 411 comment regarding going to full flaps on base to final (if that's what I understood), as a best practice is to go to final flaps before you turn base, thus keeping the turn radius to a minimum.
Full flaps before turning base to reduce ground speed, and helps to ensure the 2 mile boundry. At least that's how I've done it for the past 30+ years. Works good, and lasts a good time.
