Getting OT...but I sometimes blip the throttle with my ankle or the side of my footas well. Whatever makes you comfy and works.
The real problem isn't trying to reach the throttle or having pencil feet. The key is being able to control the brake with a portion of your foot. Everytime I brake in my 330, my foot in only covering the outer 3rd of the pedal, no matter if I will heel toe or not.
2013 F30 328i Melbourne Red
2011 E90 M3 Monte Carlo Blue
2004 E46 M3 Imola Red