Originally Posted by
69chevy
Ummm.
Being able to push down and pull up isn't more efficient?
Keeping proper foot position to maximize the leverage of your foot isn't more efficient?
Read the kinesiology studies. Clipless pedals have zero impact on efficiency. Even at the pro level it is very very limited, if at all evident.
you ought to be able to tell where your foot is located on any pedal. And sometimes changing that position can actually improve your riding by repositioning your weight going up or down hills.