I was just thinking about that the others night as I was doing some intervals... I've really tried to emphasise running on my toes, I used to run flat footed in the beggining....
So point of contact should be directly under my body? I noticed how smooth it felt, although it will take some time to get used to...
I'm used to every step landing in front of my body as I stride out....
Yeah the problem with that is it acts as a braking influence on the body, you obviously don't want that.
As for having a forefoot strike, mid-foot or heel, it's all nonsense to a degree. Something like 75% of elite marathoners around the world have a heel strike but their foot is hitting the ground underneath their hips. It's also only a very light heel strike before the rest of the foot hits the ground.
I see people running around the city at lunch purposely trying to forefoot strike and it looks silly, almost like their prancing around like a horse.
I'm generally a mid foot striker (flat) until I get tired and sloppy, at that point my heel hits first. As I said, as long as your fit is striking the ground underneath your hips you're fine. By all means push back off with your toes though, particularly your big toe.